@article{meng_aerodynamic_2024,
	title = {Aerodynamic {Hinge} {Moment} {Characteristics} of {Pitch}-{Regulated} {Mechanism} for {Mars} {Rotorcraft}: {Investigation} and {Experiments}},
	volume = {8},
	copyright = {CC0 1.0 Universal Public Domain Dedication},
	issn = {2504-446X},
	shorttitle = {Aerodynamic {Hinge} {Moment} {Characteristics} of {Pitch}-{Regulated} {Mechanism} for {Mars} {Rotorcraft}},
	url = {https://doi.org/10.3390/drones8070277},
	doi = {10.3390/drones8070277},
	abstract = {The precise regulation of the hinge moment and pitch angle driven by the pitch-regulated mechanism is crucial for modulating thrust requirements and ensuring stable attitude control in Martian coaxial rotorcraft. Nonetheless, the aerodynamic hinge moment in rotorcraft presents time-dependent dynamic properties, posing significant challenges for accurate measurement and assessment for such characteristics. In this study, we delve into the detailed aerodynamic hinge moment characteristics associated with the pitch-regulated mechanism of Mars rotorcraft under a spectrum of control strategies. A robust computational fluid dynamics model was developed to simulate the rotor’s aerodynamic loads, accompanied by a quantitative hinge moment characterization that takes into account the effects of varying rotor speeds and pitch angles. Our investigation yielded a thorough understanding of the interplay between aerodynamic load behavior and rotor surface pressure distributions, leading to the creation of an empirical mapping model for hinge moments. To validate our findings, we engineered a specialized test apparatus capable of measuring the hinge moments of the pitch-regulated mechanism, facilitating empirical assessments under replicated atmospheric conditions of both Earth and Mars. The result indicates aerodynamic hinge moments depend nonlinearly on rotational speed, peaking at a 0° pitch angle and showing minimal sensitivity to pitch under 0°. Above 0°, hinge moments decrease, reaching a minimum at 15° before rising again. Simulation and experimental comparisons demonstrate that under Earth conditions, the aerodynamic performance and hinge moment errors are within 8.54\% and 24.90\%, respectively. For Mars conditions, errors remain below 11.62\%, proving the CFD model’s reliability. This supports its application in the design and optimization of Mars rotorcraft systems, enhancing their flight control through the accurate prediction of aerodynamic hinge moments across various pitch angles and speeds.},
	language = {en},
	number = {7},
	urldate = {2024-06-21},
	journal = {Drones},
	author = {Meng, Qingkai and Hu, Yu and Wei, Wei and Yao, Zhaopu and Ke, Zhifang and Zhang, Haitao and Zhao, Molei and Yan, Qingdong},
	month = jun,
	year = {2024},
	keywords = {Mars rotorcraft, aerodynamic hinge moment, blade pressure, flow field characteristics, pitch angle, pitch-regulated mechanism},
	pages = {277},
}

The precise regulation of the hinge moment and pitch angle driven by the pitch-regulated mechanism is crucial for modulating thrust requirements and ensuring stable attitude control in Martian coaxial rotorcraft. Nonetheless, the aerodynamic hinge moment in rotorcraft presents time-dependent dynamic properties, posing significant challenges for accurate measurement and assessment for such characteristics. In this study, we delve into the detailed aerodynamic hinge moment characteristics associated with the pitch-regulated mechanism of Mars rotorcraft under a spectrum of control strategies. A robust computational fluid dynamics model was developed to simulate the rotor’s aerodynamic loads, accompanied by a quantitative hinge moment characterization that takes into account the effects of varying rotor speeds and pitch angles. Our investigation yielded a thorough understanding of the interplay between aerodynamic load behavior and rotor surface pressure distributions, leading to the creation of an empirical mapping model for hinge moments. To validate our findings, we engineered a specialized test apparatus capable of measuring the hinge moments of the pitch-regulated mechanism, facilitating empirical assessments under replicated atmospheric conditions of both Earth and Mars. The result indicates aerodynamic hinge moments depend nonlinearly on rotational speed, peaking at a 0° pitch angle and showing minimal sensitivity to pitch under 0°. Above 0°, hinge moments decrease, reaching a minimum at 15° before rising again. Simulation and experimental comparisons demonstrate that under Earth conditions, the aerodynamic performance and hinge moment errors are within 8.54% and 24.90%, respectively. For Mars conditions, errors remain below 11.62%, proving the CFD model’s reliability. This supports its application in the design and optimization of Mars rotorcraft systems, enhancing their flight control through the accurate prediction of aerodynamic hinge moments across various pitch angles and speeds.

@article{wei_analysis_2024,
	title = {Analysis and optimization of the coupling effect for duct-rotor based on aerodynamic performance},
	volume = {150},
	copyright = {Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License},
	issn = {1270-9638},
	url = {https://www.sciencedirect.com/science/article/pii/S1270963824003237},
	doi = {10.1016/j.ast.2024.109200},
	abstract = {The duct has the potential to provide additional thrust, which can enhance the overall aerodynamic performance of the system. Nonetheless, since the duct and the rotor interact with each other, it is crucial to consider their interaction while optimizing the system for improved performance. This paper presents a parameterization approach for the duct and rotor. Primarily, a rotor space characterization and parameter modeling method that utilizes Bezier curves, class functions/shape functions, and Bernstein polynomials is proposed. Next, the aerodynamic performance of different key factors of the duct-rotor system is calculated and analyzed using a numerical calculation method. The study found that the coupling effect of camber yf and chord length parameter Bc3 had a significant impact on the thrust coefficient, with a contribution rate of 7.3 \%. Correspondingly, the coupling effect of camber yf and torsion angle parameter Ba3 had a great influence on the Figure of Merit (FM), with a contribution rate of 7.1 \%. The thrust coefficient and FM of the rotor-duct system were optimized by taking the coupling effect into consideration, and the optimized ducted rotor was verified by experimental measurement. The test results shows that the high thrust case achieves a 25.60 \% increase in thrust coefficient, while the high-FM case establishes an 8.89 \% increase in the FM. This implies that the collaborative optimization based on the coupling effect of duct and rotor shape parameters can effectively improve the system's performance, such as thrust coefficient and Figure of Merit.},
	language = {en},
	urldate = {2024-05-10},
	journal = {Aerospace Science and Technology},
	author = {Wei, Wei and Tu, Jinghan and Ke, Zhifang and Wang, Ruolin and Xu, Bin},
	month = jul,
	year = {2024},
	note = {tex.ids= Wei2024Analysisa},
	keywords = {/unread, Aerodynamic characteristics, Aerofoil, Co-design, Coupling effect, Duct-rotor, ⑨Zotero},
	pages = {109200},
}

The duct has the potential to provide additional thrust, which can enhance the overall aerodynamic performance of the system. Nonetheless, since the duct and the rotor interact with each other, it is crucial to consider their interaction while optimizing the system for improved performance. This paper presents a parameterization approach for the duct and rotor. Primarily, a rotor space characterization and parameter modeling method that utilizes Bezier curves, class functions/shape functions, and Bernstein polynomials is proposed. Next, the aerodynamic performance of different key factors of the duct-rotor system is calculated and analyzed using a numerical calculation method. The study found that the coupling effect of camber yf and chord length parameter Bc3 had a significant impact on the thrust coefficient, with a contribution rate of 7.3 %. Correspondingly, the coupling effect of camber yf and torsion angle parameter Ba3 had a great influence on the Figure of Merit (FM), with a contribution rate of 7.1 %. The thrust coefficient and FM of the rotor-duct system were optimized by taking the coupling effect into consideration, and the optimized ducted rotor was verified by experimental measurement. The test results shows that the high thrust case achieves a 25.60 % increase in thrust coefficient, while the high-FM case establishes an 8.89 % increase in the FM. This implies that the collaborative optimization based on the coupling effect of duct and rotor shape parameters can effectively improve the system's performance, such as thrust coefficient and Figure of Merit.

@article{ke_collaborative_2024,
	title = {Collaborative design method for multi-impeller turbomachinery based on variable sectional-area distribution},
	volume = {104},
	issn = {1110-0168},
	url = {https://doi.org/10.1016/j.aej.2024.06.041},
	doi = {10.1016/j.aej.2024.06.041},
	abstract = {By establishing the characterization model of variable sectional area distributions, a cascade design method of torque converter based on variable sectional area distribution is proposed. Additionally, the corresponding collaborative design method for multi-impeller turbomachinery is proposed and further studied. The design cases of the impellers with different sectional area distributions are constructed through the response surface method, and the corresponding hydrodynamic characteristics are further compared and explored. However, the design of different impeller sectional area distributions for the optimal performance of the whole turbomachinery requires the collaborative design of each component’s distribution results rather than a simple combination of such optimal impeller’s area distribution result. Thus a collaborative design strategy is proposed, which can improve the pump’s capacity performance by 8.83\%, the maximum torque ratio performance can also increased by 6.33\%, which proves that such a collaborative design method is an effective optimization design approach to improve the performance of the torque converter without altering the overall dimension. The experimental results of the optimal prototype show that the torque ratio reaches 5.33\% higher than the original value, which indicates that such a collaborative optimization method for multi-impeller turbomachinery is effective and reliable.},
	language = {en},
	urldate = {2024-06-24},
	journal = {Alexandria Engineering Journal},
	author = {Ke, Zhifang and Wei, Wei and Guo, Meng and Chen, Bohan and Liu, Cheng and Yan, Qingdong},
	month = oct,
	year = {2024},
	keywords = {Cascade system, Collaborative design, Design of experiment, Fluid mechanics, Hydrodynamic torque converter, Sectional area distribution},
	pages = {150--161},
}

By establishing the characterization model of variable sectional area distributions, a cascade design method of torque converter based on variable sectional area distribution is proposed. Additionally, the corresponding collaborative design method for multi-impeller turbomachinery is proposed and further studied. The design cases of the impellers with different sectional area distributions are constructed through the response surface method, and the corresponding hydrodynamic characteristics are further compared and explored. However, the design of different impeller sectional area distributions for the optimal performance of the whole turbomachinery requires the collaborative design of each component’s distribution results rather than a simple combination of such optimal impeller’s area distribution result. Thus a collaborative design strategy is proposed, which can improve the pump’s capacity performance by 8.83%, the maximum torque ratio performance can also increased by 6.33%, which proves that such a collaborative design method is an effective optimization design approach to improve the performance of the torque converter without altering the overall dimension. The experimental results of the optimal prototype show that the torque ratio reaches 5.33% higher than the original value, which indicates that such a collaborative optimization method for multi-impeller turbomachinery is effective and reliable.

@article{ke_pitch-regulated_2024,
	title = {Pitch-{Regulated} {Control} {Strategy} for {Coaxial} {Drone} with {Variable} {Rotor} {Space} {Ratio}},
	volume = {8},
	copyright = {http://creativecommons.org/licenses/by/3.0/},
	issn = {2504-446X},
	url = {https://www.mdpi.com/2504-446X/8/12/703},
	doi = {10.3390/drones8120703},
	abstract = {This study investigates the impact of rotor spacing on the aerodynamic performance of a coaxialcopter and promotes an innovative regulated control strategy for the coaxial drone. The present research introduces a coaxialcopter with variable rotor spacing, and employing finite element numerical simulations, we assess the aerodynamic behavior of this novel configuration. Through comprehensive measurements and analysis of its aerodynamic performance across varying rotor spacings from 0.1 R to 1 R, we validate the effectiveness of a rotor-spacing control strategy for enhancing takeoff maneuvers. The numerical simulation and experiment results reveal that the performance characteristics of both the upper and lower rotors converge toward that of a single rotor as the space ratio increases, along with a reduction in their thrust fluctuations and aerodynamic performance periodicity. Considering stable power consumption patterns and endurance performance, we analyzed the interrelations binding the pitch distance of the rotors, rotational speed, and pitch angle, vis à vis the thrust coefficient and power coefficient. Through the parameter optimization method, we demonstrate that adjusting rotor spacing offers a practical means to enhance payload capacity without increasing the power input, thereby improving efficiency, which validates the practicality and efficacy of the parameter optimization approach. Furthermore, optimizing rotor spacing for specific operational scenarios enhances overall aerodynamic performance, suggesting a viable flight control strategy for takeoff and landing conditions for coaxial drones.},
	language = {en},
	number = {12},
	urldate = {2024-11-25},
	journal = {Drones},
	author = {Ke, Zhifang and Zhao, Molei and Hu, Yu and Shu, Yongjie and Liu, Weibo and Meng, Qingkai and Tu, Jinghan and Zhang, Haitao and Yao, Zhaopu and Wei, Wei},
	month = nov,
	year = {2024},
	note = {Number: 12
Publisher: Multidisciplinary Digital Publishing Institute},
	keywords = {aerodynamic performance, coaxial drone, flight control, rotor interaction, variable rotor space},
	pages = {703},
}

This study investigates the impact of rotor spacing on the aerodynamic performance of a coaxialcopter and promotes an innovative regulated control strategy for the coaxial drone. The present research introduces a coaxialcopter with variable rotor spacing, and employing finite element numerical simulations, we assess the aerodynamic behavior of this novel configuration. Through comprehensive measurements and analysis of its aerodynamic performance across varying rotor spacings from 0.1 R to 1 R, we validate the effectiveness of a rotor-spacing control strategy for enhancing takeoff maneuvers. The numerical simulation and experiment results reveal that the performance characteristics of both the upper and lower rotors converge toward that of a single rotor as the space ratio increases, along with a reduction in their thrust fluctuations and aerodynamic performance periodicity. Considering stable power consumption patterns and endurance performance, we analyzed the interrelations binding the pitch distance of the rotors, rotational speed, and pitch angle, vis à vis the thrust coefficient and power coefficient. Through the parameter optimization method, we demonstrate that adjusting rotor spacing offers a practical means to enhance payload capacity without increasing the power input, thereby improving efficiency, which validates the practicality and efficacy of the parameter optimization approach. Furthermore, optimizing rotor spacing for specific operational scenarios enhances overall aerodynamic performance, suggesting a viable flight control strategy for takeoff and landing conditions for coaxial drones.

@patent{__2024,
	address = {中国},
	title = {一种桨叶间距可调的共轴双旋翼飞行器},
	abstract = {本发明公开了一种桨叶间距可调的共轴双旋翼飞行器，涉及无人机领域，包括：上旋翼系统、调距机构和下旋翼系统；所述调距机构，包括：上安装板和下安装板，所述上旋翼系统安装在上安装板上，所述下旋翼系统安装在下安装板上；所述上安装板和下安装板之间设有连杆机构，用于实现上安装板和下安装板的轴向相对位移，从而调节上下旋翼系统间距；所述上旋翼系统和下旋翼系统中均设置有变距机构，用于实现共轴双旋翼飞行器的周期变距角和总距角调节；本发明，能够实现动态旋翼间距调节，既能保证较好的升力储备，又能提高飞行器的能耗效率。},
	nationality = {中国},
	language = {en},
	assignee = {北京理工大学重庆创新中心; 北京理工大学},
	number = {CN117446237A},
	author = {{魏巍} and {赵默雷} and {柯志芳} and {孟庆凯} and {涂静涵} and {舒用杰}},
	month = jan,
	year = {2024},
	note = {IPC: B64U30/24;B64U40/10;B64U30/296
CPC: B64U30/24;B64U40/10;B64U30/296},
}

本发明公开了一种桨叶间距可调的共轴双旋翼飞行器，涉及无人机领域，包括：上旋翼系统、调距机构和下旋翼系统；所述调距机构，包括：上安装板和下安装板，所述上旋翼系统安装在上安装板上，所述下旋翼系统安装在下安装板上；所述上安装板和下安装板之间设有连杆机构，用于实现上安装板和下安装板的轴向相对位移，从而调节上下旋翼系统间距；所述上旋翼系统和下旋翼系统中均设置有变距机构，用于实现共轴双旋翼飞行器的周期变距角和总距角调节；本发明，能够实现动态旋翼间距调节，既能保证较好的升力储备，又能提高飞行器的能耗效率。

@article{zhang_research_2024,
	title = {Research on the thermal flow characteristics of viscosity oil in hydrodynamic torque converter},
	volume = {36},
	issn = {1070-6631},
	url = {https://doi.org/10.1063/5.0211749},
	doi = {10.1063/5.0211749},
	abstract = {The increase in power density of hydrodynamic torque converters (HTCs) leads to a sharp rise in temperature within flow channels, affecting the reliability. In order to accurately predict the thermal effect and temperature distribution characteristics of the HTC internal viscosity oil, a multi-physics computational fluid dynamics (CFD) model is proposed. A specialized test bench was established, and the macro and internal flow temperature data were obtained. HTCs with different working conditions and wheel sets were studied. The results indicate that CFD model considering energy equation can accurately predict the overall hydrodynamic performance and the flow field temperature characteristics under different rotating conditions. The prediction error of the overall temperature rise is within 4.92\%, and the flow field temperature prediction error of the stator is under 14.3\%. The hydraulic characteristics is improved by 6.02\%. The analysis of internal flow and energy exchange characteristics indicates the thermal effects and temperature distribution mechanisms caused by energy loss in the flow field within the HTC. The study provides an effective computational model for the prediction and control of the heat generation of the HTC and enhances the depth of research on the flow mechanism of inhomogeneous flow fields caused by thermal effects.},
	number = {5},
	urldate = {2024-05-28},
	journal = {Physics of Fluids},
	author = {Zhang, Jiahua (张嘉华) and Yan, Qingdong (闫清东) and Khoo, Boo Cheong and Liu, Cheng (刘城) and Ke, Zhifang (柯志芳) and Wei, Wei (魏巍)},
	month = may,
	year = {2024},
	pages = {053112},
}

The increase in power density of hydrodynamic torque converters (HTCs) leads to a sharp rise in temperature within flow channels, affecting the reliability. In order to accurately predict the thermal effect and temperature distribution characteristics of the HTC internal viscosity oil, a multi-physics computational fluid dynamics (CFD) model is proposed. A specialized test bench was established, and the macro and internal flow temperature data were obtained. HTCs with different working conditions and wheel sets were studied. The results indicate that CFD model considering energy equation can accurately predict the overall hydrodynamic performance and the flow field temperature characteristics under different rotating conditions. The prediction error of the overall temperature rise is within 4.92%, and the flow field temperature prediction error of the stator is under 14.3%. The hydraulic characteristics is improved by 6.02%. The analysis of internal flow and energy exchange characteristics indicates the thermal effects and temperature distribution mechanisms caused by energy loss in the flow field within the HTC. The study provides an effective computational model for the prediction and control of the heat generation of the HTC and enhances the depth of research on the flow mechanism of inhomogeneous flow fields caused by thermal effects.

@article{KeZhi2023YeLiB,
	title = {Inverse {Design} {Method} for {Impeller} {Capacity} {Optimization} of {Hydrodynamic} {Torque} {Converter}},
	volume = {44},
	copyright = {0.743},
	issn = {1000-1093},
	url = {http://www.co-journal.com/CN/10.12382/bgxb.2022.0707},
	doi = {10.12382/bgxb.2022.0707},
	abstract = {为提升液力变矩器性能的同时优化内部流场载荷分布，在对变矩器叶...},
	language = {CN},
	number = {1},
	urldate = {2025-11-28},
	journal = {Acta Armamentarii},
	author = {Ke, Zhifang and Wei, Wei and Liu, Cheng and Guo, Meng and Zhang, Jiahua and Yan, Qingdong},
	month = feb,
	year = {2023},
	note = {tex.ids= yanqingdong2023Yelibianjuqiyelunnengrongdingxiangyouhuafanshejifangfa},
	keywords = {/unread, ⑨Zotero, ⚠️ Invalid DOI, 反设计, 叶栅系统, 叶表载荷, 定向设计, 液力变矩器},
	pages = {51--60},
}

为提升液力变矩器性能的同时优化内部流场载荷分布，在对变矩器叶...

@article{guo_transient_2023,
	title = {On the transient cavitation characteristics of viscous fluids around a hydrofoil},
	volume = {267},
	copyright = {4.5003},
	issn = {0029-8018},
	url = {https://linkinghub.elsevier.com/retrieve/pii/S002980182202488X},
	doi = {10.1016/j.oceaneng.2022.113205},
	abstract = {Cavitation is a transient phase transition process between liquid and vapour, and it often occurs in machines using viscous fluids as working media owing to complex operating environments and the trend toward high temperature, high velocity, and high power density. To investigate the cavitation properties of viscous fluids, a visualization experimental system was proposed and developed in this study. In addition, a three-dimensional computational fluid dynamics (CFD) model considering cavitation was developed based on the finite volume method (FVM) to study the cavitation characteristics and unsteady cavitation behaviors of the cavitating flow in viscous oil around a NACA0012 (National Advisory Committee for Aeronautics) hydrofoil under various con-ditions. The results showed that cavitation started on the suction surface of the hydrofoil near the head, and the critical cavitation number and the critical velocity were 5.2 and 10 m/s at an operating pressure of zero. Smaller cavitation numbers and higher fluid velocity induced and intensified the cavitation. Additionally, the cavitation process of the viscous oil around the hydrofoil was highly unstable and periodic, and its development included birth, growth, separation, and disintegration, with an evolution frequency of 47 Hz. This study provides a theoretical basis, experimental means, and data support for cavitation of viscous fluids, especially oil. It has significant engineering applications for the development of fluid machinery.},
	language = {en-US},
	urldate = {2022-12-02},
	journal = {OCEAN ENGINEERING},
	author = {Guo, M and Liu, C and Liu, SQ and Zhang, JH and Ke, ZF and Yan, QD and Khoo, BC},
	month = jan,
	year = {2023},
	note = {tex.ids= Guo2023Transient},
	keywords = {/unread, AUTOMOTIVE TORQUE CONVERTER, COLLAPSE, Cavitation, Computational fluid dynamics, DYNAMICS, FLOW, Flow around hydrofoil, PRESSURE, SIMULATION, Viscous oil},
	pages = {113205},
}

Cavitation is a transient phase transition process between liquid and vapour, and it often occurs in machines using viscous fluids as working media owing to complex operating environments and the trend toward high temperature, high velocity, and high power density. To investigate the cavitation properties of viscous fluids, a visualization experimental system was proposed and developed in this study. In addition, a three-dimensional computational fluid dynamics (CFD) model considering cavitation was developed based on the finite volume method (FVM) to study the cavitation characteristics and unsteady cavitation behaviors of the cavitating flow in viscous oil around a NACA0012 (National Advisory Committee for Aeronautics) hydrofoil under various con-ditions. The results showed that cavitation started on the suction surface of the hydrofoil near the head, and the critical cavitation number and the critical velocity were 5.2 and 10 m/s at an operating pressure of zero. Smaller cavitation numbers and higher fluid velocity induced and intensified the cavitation. Additionally, the cavitation process of the viscous oil around the hydrofoil was highly unstable and periodic, and its development included birth, growth, separation, and disintegration, with an evolution frequency of 47 Hz. This study provides a theoretical basis, experimental means, and data support for cavitation of viscous fluids, especially oil. It has significant engineering applications for the development of fluid machinery.

@patent{__2023,
	address = {中国},
	title = {可视化粘性油液非定常空化观测试验台},
	url = {https://d.wanfangdata.com.cn/patent/ChhQYXRlbnROZXdTMjAyNDExMjIxNjU4MjISE0NOMjAyMjEwMzUwNzQ5LjNfc3EaCDl0Z3Bvb3hl},
	abstract = {本发明提供一种可视化粘性油液非定常空化观测试验台，可用于粘性油液如液压油的空化的发生和观测。包括：流体动力源、温控单元、空化发生单元、传感器单元以及测控单元；流体动力源作为供油单元，用于向空化发生单元提供具有设定压力和流速的粘性油液，并形成循环的粘性油液流动回路；温控单元用于对流体动力源中的粘性油液进行温度调控；空化发生单元具有可视化试验段，具有设定压力和流速的粘性油液流速流经可视化验段，产生空化现象；传感器单元用于实时监测空化发生单元前后粘性油液的压力、流速、温度以及气体含量；测控单元包括用于控制整个试验台运行的控制单元以及对空化发生单元中可视化试验段内发生的空化现象进行观察的观测单元。},
	nationality = {中国},
	language = {en},
	assignee = {北京理工大学},
	number = {CN114910245A},
	author = {{刘城} and {郭猛} and {刘世琦} and {柯志芳} and {张嘉华} and {闫清东} and {魏巍}},
	month = mar,
	year = {2023},
	note = {tex.ids= Liu2022Keshihuanianxingyouyefeidingchangkonghuaguanceshiyantai},
	keywords = {/unread},
}

本发明提供一种可视化粘性油液非定常空化观测试验台，可用于粘性油液如液压油的空化的发生和观测。包括：流体动力源、温控单元、空化发生单元、传感器单元以及测控单元；流体动力源作为供油单元，用于向空化发生单元提供具有设定压力和流速的粘性油液，并形成循环的粘性油液流动回路；温控单元用于对流体动力源中的粘性油液进行温度调控；空化发生单元具有可视化试验段，具有设定压力和流速的粘性油液流速流经可视化验段，产生空化现象；传感器单元用于实时监测空化发生单元前后粘性油液的压力、流速、温度以及气体含量；测控单元包括用于控制整个试验台运行的控制单元以及对空化发生单元中可视化试验段内发生的空化现象进行观察的观测单元。

@article{__2023-1,
	title = {基于变截面积流道的液力变矩器叶栅系统设计},
	volume = {44},
	copyright = {All rights reserved},
	issn = {1001-0645},
	url = {https://link.cnki.net/doi/10.15918/j.tbit1001-0645.2023.148},
	doi = {10.15918/j.tbit1001-0645.2023.148},
	abstract = {流道截流面积分布对液力旋转机械的液力性能具有重要影响.为了减少扩散等液力损失，变矩器流道截面积分布通常采用等截面积分布的形式，但并未充分发挥截面积分布参数在流场调节和性能优化方面的优势.因此，文中研究提出了过流截面积表征模型，并建立了基于可变截面积分布的变矩器循环圆及叶栅设计系统，对变截面积流道的液力变矩器循环圆设计方法进行了研究.通过设计多组不同截面积分布的实例，采用DOE方法进行比较分析，进一步研究了叶轮截面积分布形式对变矩器性能的影响.同时，通过对不同叶轮的组合设计，获得了组合型性能优化的循环圆设计结果.实验结果表明，基于变截面积流道优化设计的变矩器泵轮转矩提升了18.5\%，起动变矩比也提高了3.9\%.说明基于变截面积分布的液力变矩器循环圆设计方法是一种有效的优化设计方法，能够在保持外形尺寸的同时提升变矩器性能.},
	language = {zh-CN},
	number = {5},
	urldate = {2024-05-09},
	journal = {北京理工大学学报},
	author = {{柯志芳} and {刘城} and {郭猛} and {魏巍} and {闫清东}},
	month = dec,
	year = {2023},
	note = {original-container-title: Transactions of Beijing Institute of Technology
Status: advance online publication
foundation: 国家自然科学基金资助项目（51475041,51805027）； 国家部委基础产品创新计划资助项目（237099000000170009）； 车辆传动重点实验室基金资助项目（614221304040517）；
download: 75
album: 工程科技Ⅱ辑
CLC: TH137.332
CNKICite: 0
dbcode: CAPJ
dbname: CAPJLAST
filename: BJLG20231208008
publicationTag: 北大核心, CA, INSPEC, JST, Pж(AJ), EI, CSCD, WJCI
CIF: 1.868
AIF: 1.221},
	keywords = {/unread, 111Cited-PLSM, ②已读1x, ⑥收藏5x, ⑨Zotero, 叶栅系统, 实验设计(DOE), 截面积分布, 流体力学, 液力变矩器},
	pages = {512--520},
}

流道截流面积分布对液力旋转机械的液力性能具有重要影响.为了减少扩散等液力损失，变矩器流道截面积分布通常采用等截面积分布的形式，但并未充分发挥截面积分布参数在流场调节和性能优化方面的优势.因此，文中研究提出了过流截面积表征模型，并建立了基于可变截面积分布的变矩器循环圆及叶栅设计系统，对变截面积流道的液力变矩器循环圆设计方法进行了研究.通过设计多组不同截面积分布的实例，采用DOE方法进行比较分析，进一步研究了叶轮截面积分布形式对变矩器性能的影响.同时，通过对不同叶轮的组合设计，获得了组合型性能优化的循环圆设计结果.实验结果表明，基于变截面积流道优化设计的变矩器泵轮转矩提升了18.5%，起动变矩比也提高了3.9%.说明基于变截面积分布的液力变矩器循环圆设计方法是一种有效的优化设计方法，能够在保持外形尺寸的同时提升变矩器性能.

@inproceedings{wei_study_2023,
	address = {Tokyo, Japan},
	title = {Study on {Roll} {Oscillation} {Phenomenon} and {Controller} {Design} of {Deflection}-based {Flying} {Vehicles}},
	copyright = {All rights reserved},
	isbn = {979-8-3503-0478-7},
	url = {https://doi.org/10.1109/DSA59317.2023.00113},
	doi = {10.1109/DSA59317.2023.00113},
	abstract = {Flying vehicles are considered a promising solution for enhanced transportation; however, existing configurations face limitations in terms of flexibility. The introduction of deflection servos has shown to enhance maneuverability and flexibility of flying cars, but it also leads to an increase in roll angle oscillation, thereby posing challenges for control. The application of controllers designed for quadrotor UAVs to deflection-based flying vehicles is inadequate due to structural differences. To address this issue, this paper proposes a flight controller incorporating deflection angle feedback. Simulation results demonstrate a reduction of 62.6\% and 57.5\% in the amplitude of roll angle oscillation during hover and forward flight conditions, respectively, when compared to a flight controller lacking deflection feedback. These findings indicate that the designed controller enhances flight stability and facilitates the broader implementation of deflection-based flying vehicle.},
	language = {en},
	urldate = {2024-03-04},
	booktitle = {2023 {IEEE} {International} {Symposium} on {Autonomous} {Vehicle} {Software}},
	author = {Wei, Wei and Shu, Yongjie and Ke, Zhifang and Fan, Kangdi and Dong, Linwei},
	month = aug,
	year = {2023},
	note = {abstractTranslation:
abstractTranslation:
ISSN: 2767-6684},
	pages = {802--811},
}

Flying vehicles are considered a promising solution for enhanced transportation; however, existing configurations face limitations in terms of flexibility. The introduction of deflection servos has shown to enhance maneuverability and flexibility of flying cars, but it also leads to an increase in roll angle oscillation, thereby posing challenges for control. The application of controllers designed for quadrotor UAVs to deflection-based flying vehicles is inadequate due to structural differences. To address this issue, this paper proposes a flight controller incorporating deflection angle feedback. Simulation results demonstrate a reduction of 62.6% and 57.5% in the amplitude of roll angle oscillation during hover and forward flight conditions, respectively, when compared to a flight controller lacking deflection feedback. These findings indicate that the designed controller enhances flight stability and facilitates the broader implementation of deflection-based flying vehicle.

@inproceedings{meng_study_2023,
	title = {Study on the {Transient} {Dynamic} {Characteristics} of the {Pitch}-{Regulated} {Device} for {Coaxilcopter} {Under} {Aerodynamic} {Loads}},
	copyright = {All rights reserved},
	isbn = {978-0-7918-8705-9},
	url = {https://dx.doi.org/10.1115/GT2023-103937},
	doi = {10.1115/GT2023-103937},
	abstract = {Coaxilcopter with variable rotor space can dynamically adjust the parameters such as the angle of attack of blades through the pitch-regulated device, so it can adjust and change flight attitude. However, both the rotor aerodynamics and the structure of the pitch-regulated device are complex, and some of the forces generated by the rotor will act on such device in the form of a hinge moment, which would affect the realiablity of the variable pitch-regulated device and the whole craft.
Therefore, a coaxilcopter with a pitch-regulated device is designed, and the finite element numerical simulation method is promoted to calculate and analyze the transient aerodynamic loads of the rotor under different rotor spaces and unbalanced angle between blades. The hinge moment load results are further applied to the variable pitch-regulated device, and the dynamic characteristics of the variable pitch-regulated device under the action of hinge moment are further studied.
The results show that when the unbalanced angle between the left and right blade would lead to the increase of the hinge moment of both blade, and with the increase of rotor speed, the hinge moment of both the left and right blades gradually increases; When the hinge moment is applied to the variable pitch-regulated device, the steering gear load of the lower rotor is 1.57 times that of the rotor steering gear when the propeller spacing is 0.1R (R is rotor radius); When the propeller spacing is 1.2R, the actuator load of the upper rotor is 6\%similar to 12\% different from that of the single rotor mode, indicating that the influence of propeller spacing on the upper rotor is negligible at 1.2R, but the actuator load of the lower rotor is about 35\% different from that of the single rotor mode, which has a significant influence. It also reveals that the aerodynamic interaction between rotors would affect the hinge moment, it provides a basis for the design of variable pitch-regulated device, and provides a reference for the variable pitch control strategy of aerodynamic performance, which has practical engineering significance.},
	language = {en-US},
	urldate = {2024-06-05},
	booktitle = {Beijing {Institute} of {Technology}},
	publisher = {American Society of Mechanical Engineers Digital Collection},
	author = {Meng, QK and Ke, ZF and Wei, W and Zhao, ML and Tu, JH and Yan, QD and A, MER SOC MECHANICAL ENGINEERS},
	year = {2023},
	note = {tex.ids= Meng2023Study},
	keywords = {/unread, SWASHPLATE MECHANISM, aerodynamic loads, coaxilcopter, pitch-regulated device, rotor interaction, transient dynamic, variable rotor space},
}

Coaxilcopter with variable rotor space can dynamically adjust the parameters such as the angle of attack of blades through the pitch-regulated device, so it can adjust and change flight attitude. However, both the rotor aerodynamics and the structure of the pitch-regulated device are complex, and some of the forces generated by the rotor will act on such device in the form of a hinge moment, which would affect the realiablity of the variable pitch-regulated device and the whole craft. Therefore, a coaxilcopter with a pitch-regulated device is designed, and the finite element numerical simulation method is promoted to calculate and analyze the transient aerodynamic loads of the rotor under different rotor spaces and unbalanced angle between blades. The hinge moment load results are further applied to the variable pitch-regulated device, and the dynamic characteristics of the variable pitch-regulated device under the action of hinge moment are further studied. The results show that when the unbalanced angle between the left and right blade would lead to the increase of the hinge moment of both blade, and with the increase of rotor speed, the hinge moment of both the left and right blades gradually increases; When the hinge moment is applied to the variable pitch-regulated device, the steering gear load of the lower rotor is 1.57 times that of the rotor steering gear when the propeller spacing is 0.1R (R is rotor radius); When the propeller spacing is 1.2R, the actuator load of the upper rotor is 6%similar to 12% different from that of the single rotor mode, indicating that the influence of propeller spacing on the upper rotor is negligible at 1.2R, but the actuator load of the lower rotor is about 35% different from that of the single rotor mode, which has a significant influence. It also reveals that the aerodynamic interaction between rotors would affect the hinge moment, it provides a basis for the design of variable pitch-regulated device, and provides a reference for the variable pitch control strategy of aerodynamic performance, which has practical engineering significance.

@patent{__2023-2,
	address = {中国},
	title = {一种基于变截面积分布的循环圆设计方法},
	url = {https://d.wanfangdata.com.cn/patent/ChhQYXRlbnROZXdTMjAyNDExMjIxNjU4MjISEENOMjAyMzExMTgxOTY3LlgaCGU3YjJjYmZq},
	abstract = {本发明公开了一种基于变截面积分布的循环圆设计方法，该循环圆设计方法包括：获得给定的循环圆外环；利用贝塞尔曲线设计循环圆过流截面积分布曲线，以入口处过流截面积为标准，其它位置处的过流截面积以相对截面积进行表征，得到循环圆过流截面积分布结果；建立极坐标系和直角坐标系；根据循环圆过流截面积分布结果，求解循环圆在直角坐标系下的内环坐标，并绘制内环曲线。上述设计方法采用固定循环圆外环而改变截面积分布的方式对内环进行设计，同时利用贝塞尔曲线实现过流截面积分布可调的循环圆设计，可对不同叶轮的循环圆截面积分布进行单独设计，实现变矩器循环圆的变截面积分布设计。},
	nationality = {中国},
	assignee = {北京理工大学},
	number = {CN117216904A},
	author = {{柯志芳} and {魏巍} and {刘城} and {孟庆凯} and {郭猛} and {张嘉华} and {闫清东}},
	month = dec,
	year = {2023},
	note = {IPC: G06F30/17;G06F30/28;G06F119/14;G06F113/08;G06T17/00
CPC: G06F30/17;G06F30/28;G06T17/00
tex.ids= Ke2023Yizhongjiyubianjiemianjifenbudexunhuanyuanshejifangfa},
	keywords = {/unread},
}

本发明公开了一种基于变截面积分布的循环圆设计方法，该循环圆设计方法包括：获得给定的循环圆外环；利用贝塞尔曲线设计循环圆过流截面积分布曲线，以入口处过流截面积为标准，其它位置处的过流截面积以相对截面积进行表征，得到循环圆过流截面积分布结果；建立极坐标系和直角坐标系；根据循环圆过流截面积分布结果，求解循环圆在直角坐标系下的内环坐标，并绘制内环曲线。上述设计方法采用固定循环圆外环而改变截面积分布的方式对内环进行设计，同时利用贝塞尔曲线实现过流截面积分布可调的循环圆设计，可对不同叶轮的循环圆截面积分布进行单独设计，实现变矩器循环圆的变截面积分布设计。

@patent{__2023-3,
	address = {中国},
	title = {一种基于分段贝塞尔曲线的圆弧拟合精度可调循环圆设计方法},
	url = {https://d.wanfangdata.com.cn/patent/ChhQYXRlbnROZXdTMjAyNDExMjIxNjU4MjISEENOMjAyMzExMTg4MDI5LjIaCGU3YjJjYmZq},
	abstract = {本发明公开了一种基于分段贝塞尔曲线的圆弧拟合精度可调循环圆设计方法，该设计方法包括：步骤一，给定初始循环圆中一段圆弧的设计结果以及允许的拟合误差；步骤二，在圆弧上设置两个控制点，以入口角度、出口角度、入口半径、出口半径或者圆弧半径作为约束条件，利用三次Bezier曲线对初始循环圆的此段圆弧进行拟合；步骤三，判断拟合误差是否满足设计要求，是则结束拟合，否则通过在此段圆弧上取点来增加控制点数，并重复执行步骤二和步骤三。上述设计方法可为多叶轮液力元件多段圆弧型循环圆的内外环线设计和反求拟合提供新的设计方法，简化其光滑连接等设计约束的复杂性，提高其设计以及反向建模时的灵活性和可操作性。},
	nationality = {中国},
	language = {en},
	assignee = {北京理工大学},
	number = {CN117216905A},
	author = {{柯志芳} and {魏巍} and {刘城} and {郭猛} and {孟庆凯} and {陈勃含} and {闫清东}},
	month = dec,
	year = {2023},
	note = {IPC: G06F119/02;G06F30/17;G06F30/28;G06F119/14;G06F113/08;G06T17/00;G06F111/04
CPC: G06F30/17;G06F30/28;G06T17/00
tex.ids= Ke2023Yizhongjiyufenduanbeisaierquxiandeyuanhunihejingduketiaoxunhuanyuanshejifangfa},
	keywords = {/unread},
}

本发明公开了一种基于分段贝塞尔曲线的圆弧拟合精度可调循环圆设计方法，该设计方法包括：步骤一，给定初始循环圆中一段圆弧的设计结果以及允许的拟合误差；步骤二，在圆弧上设置两个控制点，以入口角度、出口角度、入口半径、出口半径或者圆弧半径作为约束条件，利用三次Bezier曲线对初始循环圆的此段圆弧进行拟合；步骤三，判断拟合误差是否满足设计要求，是则结束拟合，否则通过在此段圆弧上取点来增加控制点数，并重复执行步骤二和步骤三。上述设计方法可为多叶轮液力元件多段圆弧型循环圆的内外环线设计和反求拟合提供新的设计方法，简化其光滑连接等设计约束的复杂性，提高其设计以及反向建模时的灵活性和可操作性。

@inproceedings{tao_optimal_2022,
	title = {Optimal {Blade} {Design} of {Stator} {Based} on {Adjoint} {Fluid} {Topology} {Optimization} {Method} in a {Torque} {Converter}},
	volume = {10-D},
	copyright = {All rights reserved},
	isbn = {978-0-7918-8612-0},
	url = {https://dx.doi.org/10.1115/GT2022-83005},
	doi = {10.1115/GT2022-83005},
	abstract = {Traditional forward design method for blade of hydrodynamic torque converter is limited by empirical design so that it is difficult to produce innovative blade design results. Based on the adjoint sensitivity, an unconventional optimization blade design method, Adjoint Fluid Topology Optimization method was proposed. Based on this method, a directional topological optimization of stator blade design was carried out as an example to achieve a better torque ratio performance for torque converter under stalling condition. Such optimization method can achieve irregular stator blade with better performance. Moreover, the flow energy distribution before and after such topology optimization are further studied, the results show that the optimized torque ratio is increased by 9.99\% under stalling condition when comparing with the original design result, and the irregular blade result has a more reasonable distribution of flow energy, indicating that fluid topology optimization can not only get rid of the restriction of forward blade design method and provide an innovation way for irregular blade design, but also improve the potential performance of turbomachinery.},
	language = {en-US},
	urldate = {2023-09-26},
	booktitle = {Beijing {Institute} of {Technology}},
	publisher = {American Society of Mechanical Engineers Digital Collection},
	author = {Tao, TL and Ke, ZF and Wei, W and Liu, C and Yan, QD and A, MER SOC MECHANICAL ENGINEERS},
	year = {2022},
	note = {tex.ids= Tao2022OPTIMAL, Tao2022Optimal},
	keywords = {/unread, Internal flow field, adjoint topology, energy distribution, hydrodynamic torque converter, irregular blade},
}

Traditional forward design method for blade of hydrodynamic torque converter is limited by empirical design so that it is difficult to produce innovative blade design results. Based on the adjoint sensitivity, an unconventional optimization blade design method, Adjoint Fluid Topology Optimization method was proposed. Based on this method, a directional topological optimization of stator blade design was carried out as an example to achieve a better torque ratio performance for torque converter under stalling condition. Such optimization method can achieve irregular stator blade with better performance. Moreover, the flow energy distribution before and after such topology optimization are further studied, the results show that the optimized torque ratio is increased by 9.99% under stalling condition when comparing with the original design result, and the irregular blade result has a more reasonable distribution of flow energy, indicating that fluid topology optimization can not only get rid of the restriction of forward blade design method and provide an innovation way for irregular blade design, but also improve the potential performance of turbomachinery.

@article{guo_parametric_2022,
	title = {Parametric analysis of the effects of blade exit angle on the cavitation characteristics in a hydraulic torque converter},
	volume = {34},
	copyright = {4.5339},
	issn = {1070-6631},
	url = {https://aip.scitation.org/doi/10.1063/5.0090302},
	doi = {10.1063/5.0090302},
	abstract = {Hydraulic torque converters are prone to cavitation due to their high impeller rotational speeds and their complex three-dimensional flow characteristics. Since the blades are the core components of torque converters, the shapes of the blades are important to the hydraulic performance and cavitation characteristics. Different cavitation computational fluid dynamics (CFD) models for a torque converter were developed to simulate the internal cavitation flow for different pump and turbine blade exit angles, and the influence of the blade angles on the cavitation characteristics and cavitation flow field in the torque converter was investigated. Experimental prototypes were produced and tested for verification. The results indicate that the pump and turbine blade exit angles had significant effects on the cavitation number of the torque converter. Increasing the pump and turbine blade exit angles promotes the generation and intensification of cavitation, resulting in severe changes in the shapes and locations of the cavitation bubbles due to changes in the fluid impact angles. Additionally, cavitation is quickly suppressed and the performance is improved when the blade exit angles are reduced within an appropriate range, in particular, that of the turbine blade. These research results can provide guidance for the design of a high-performance hydraulic torque converter cascade system and the suppression of cavitation for practical engineering applications. Published under an exclusive license by AIP Publishing.},
	language = {en-US},
	number = {5},
	urldate = {2023-01-13},
	journal = {PHYSICS OF FLUIDS},
	author = {Guo, M and Liu, C and Zhang, JH and Liu, SQ and Ke, ZF and Yan, QD and Khoo, BC},
	month = may,
	year = {2022},
	note = {WOS:000797244200013
abstractTranslation:
abstractTranslation:
abstractTranslation:
abstractTranslation:
abstractTranslation:
tex.ids= Guo2022Parametric, GuoParametric
publisher: American Institute of Physics},
	keywords = {/unread},
	pages = {053309},
}

Hydraulic torque converters are prone to cavitation due to their high impeller rotational speeds and their complex three-dimensional flow characteristics. Since the blades are the core components of torque converters, the shapes of the blades are important to the hydraulic performance and cavitation characteristics. Different cavitation computational fluid dynamics (CFD) models for a torque converter were developed to simulate the internal cavitation flow for different pump and turbine blade exit angles, and the influence of the blade angles on the cavitation characteristics and cavitation flow field in the torque converter was investigated. Experimental prototypes were produced and tested for verification. The results indicate that the pump and turbine blade exit angles had significant effects on the cavitation number of the torque converter. Increasing the pump and turbine blade exit angles promotes the generation and intensification of cavitation, resulting in severe changes in the shapes and locations of the cavitation bubbles due to changes in the fluid impact angles. Additionally, cavitation is quickly suppressed and the performance is improved when the blade exit angles are reduced within an appropriate range, in particular, that of the turbine blade. These research results can provide guidance for the design of a high-performance hydraulic torque converter cascade system and the suppression of cavitation for practical engineering applications. Published under an exclusive license by AIP Publishing.

@article{guo_detection_2022,
	title = {Detection and evaluation of cavitation in the stator of a torque converter using pressure measurement},
	volume = {34},
	copyright = {4.5339},
	issn = {1070-6631},
	url = {https://aip.scitation.org/doi/10.1063/5.0088055},
	doi = {10.1063/5.0088055},
	abstract = {Cavitation is a transient phase transition between liquid and vapor, and it often occurs in fluid machinery, especially in a hydraulic torque converter that uses oil as the working medium to transmit speed and torque. The complex and strongly coupled fluid flow in the torque converter is prone to cavitation due to high rotating speed and high-temperature working conditions. Cavitation seriously affects the working performance, transmission smoothness, and service life of the torque converter. The flow pressure in the stator of a torque converter under various charging conditions and high rotating speeds was measured. The pressure data on the stator blade were analyzed in the time domain and frequency domain to identify and evaluate the cavitation characteristic. The transient cavitation flow inside the torque converter was also simulated with the computational fluid dynamics model. The results show that the shedding of cavitation seriously reduced the hydraulic performance, hindered the fluid flow, and destroyed the stability of the flow field. Moreover, cavitation aggravates the complexity and nonlinearity of the pressure frequency and hydraulic performance oscillation of the torque converter, and seriously affected the shaft/blade interaction frequency between the pump and stator. Meanwhile, the occurrence and degree of cavitation in the torque converter can be evaluated by A(PS.shaft)/A(PS.blade) (the amplitude ratio of the shaft interaction frequency and blade interaction frequency between pump and stator) with spectrum analysis of the dynamic pressure, and the critical value was 1.6 for the test torque converter. The research revealed the influence of cavitation on the internal flow field of the torque converter and provided a novel practical cavitation evaluation technique.Published under an exclusive license by AIP Publishing.},
	language = {en-US},
	number = {4},
	urldate = {2023-01-13},
	journal = {PHYSICS OF FLUIDS},
	author = {Guo, M and Liu, C and Liu, SQ and Ke, ZF and Wei, W and Yan, QD and Khoo, BC},
	month = apr,
	year = {2022},
	note = {WOS:000793146500003
tex.ids= Guo2022Detection
publisher: American Institute of Physics},
	keywords = {/unread, FLOW, ②已读1x, ③笔记2x},
	pages = {045124},
}

Cavitation is a transient phase transition between liquid and vapor, and it often occurs in fluid machinery, especially in a hydraulic torque converter that uses oil as the working medium to transmit speed and torque. The complex and strongly coupled fluid flow in the torque converter is prone to cavitation due to high rotating speed and high-temperature working conditions. Cavitation seriously affects the working performance, transmission smoothness, and service life of the torque converter. The flow pressure in the stator of a torque converter under various charging conditions and high rotating speeds was measured. The pressure data on the stator blade were analyzed in the time domain and frequency domain to identify and evaluate the cavitation characteristic. The transient cavitation flow inside the torque converter was also simulated with the computational fluid dynamics model. The results show that the shedding of cavitation seriously reduced the hydraulic performance, hindered the fluid flow, and destroyed the stability of the flow field. Moreover, cavitation aggravates the complexity and nonlinearity of the pressure frequency and hydraulic performance oscillation of the torque converter, and seriously affected the shaft/blade interaction frequency between the pump and stator. Meanwhile, the occurrence and degree of cavitation in the torque converter can be evaluated by A(PS.shaft)/A(PS.blade) (the amplitude ratio of the shaft interaction frequency and blade interaction frequency between pump and stator) with spectrum analysis of the dynamic pressure, and the critical value was 1.6 for the test torque converter. The research revealed the influence of cavitation on the internal flow field of the torque converter and provided a novel practical cavitation evaluation technique.Published under an exclusive license by AIP Publishing.

@article{ke_experimental_2022,
	title = {Experimental measurement of the flow-induced pulsation in a hydrodynamic turbomachinery stator and its pressure fluctuation characteristics},
	volume = {30},
	copyright = {All rights reserved},
	issn = {2215-0986},
	url = {https://www.sciencedirect.com/science/article/pii/S2215098621001634},
	doi = {10.1016/j.jestch.2021.07.005},
	abstract = {By means of experimental measurement of the transient internal flow field and the periodic lumped-blade separation analysis method (PLSAM), the pressure field distribution on a stator blade surface and the corresponding flow-induced pulsation, as well as the fluctuation characteristics in a torque converter are acquired and further analysed. The results show that there are fluctuation characteristics in both the blade pressure distribution results and the blade torque under the influence of flow induced pulsation, while the relationship between these fluctuations and the rotatory angle of the wheels reveals the mechanism of the flow induced pulsation; namely, the main cause of the flow induced pulsation lies in the successive switching of the turbine/pump blade position relative to the stator, which can be modelled by a trigonometric function in both the space domain and time domain, while the frequency domain characteristics of this trigonometric function exist in both the internal flow characteristics and performance results, which allows a connection to be built between the macro-performance and the micro-internal flow character and can be used for the inverse design of the cascade system. (C) 2021 The Authors. Published by Elsevier B.V. on behalf of Karabuk University},
	language = {en-US},
	urldate = {2021-08-26},
	journal = {ENGINEERING SCIENCE AND TECHNOLOGY-AN INTERNATIONAL JOURNAL-JESTECH},
	author = {Ke, ZF and Wei, W and Liu, C and Yan, QD and Wood, H},
	month = jun,
	year = {2022},
	note = {116Experiment
IF：2020：4.360；
2019：3.219；
tex.ids= Ke2021Experimental},
	keywords = {/unread, 116Cited-Experiment, AUTOMOTIVE TORQUE CONVERTER, Blade load distribution, FIELD, Internal flow measurement, Inverse design method, LASER VELOCIMETER MEASUREMENTS, PIV, PUMP, Periodic lumped-blade separation analysis method, Pressure fluctuation, TURBINE, Torque converter, ②已读1x, ⑥收藏5x, ⑦Cite01, ⑨Zotero},
	pages = {101042},
}

By means of experimental measurement of the transient internal flow field and the periodic lumped-blade separation analysis method (PLSAM), the pressure field distribution on a stator blade surface and the corresponding flow-induced pulsation, as well as the fluctuation characteristics in a torque converter are acquired and further analysed. The results show that there are fluctuation characteristics in both the blade pressure distribution results and the blade torque under the influence of flow induced pulsation, while the relationship between these fluctuations and the rotatory angle of the wheels reveals the mechanism of the flow induced pulsation; namely, the main cause of the flow induced pulsation lies in the successive switching of the turbine/pump blade position relative to the stator, which can be modelled by a trigonometric function in both the space domain and time domain, while the frequency domain characteristics of this trigonometric function exist in both the internal flow characteristics and performance results, which allows a connection to be built between the macro-performance and the micro-internal flow character and can be used for the inverse design of the cascade system. (C) 2021 The Authors. Published by Elsevier B.V. on behalf of Karabuk University

@phdthesis{__2022,
	address = {北京},
	type = {工学博士},
	title = {基于流场设计的液力变矩器叶栅反设计方法研究},
	copyright = {All rights reserved},
	language = {zh-CN},
	school = {北京理工大学},
	author = {{柯志芳}},
	month = mar,
	year = {2022},
	keywords = {②已读1x, ⑨Zotero},
}

@misc{_tcbladingst_2022,
	address = {Beijing},
	title = {{tcBladingST} 液力变矩器等厚叶片空间构型软件},
	copyright = {All rights reserved},
	isbn = {2023SR0209054},
	publisher = {BIT},
	author = {{柯志芳} and {刘城}},
	year = {2022},
	note = {登记号：2023SR0209054},
	keywords = {②已读1x, ⑨Zotero},
}

@patent{__2022-1,
	title = {一种共轴双旋翼飞行器},
	language = {en},
	author = {{魏巍} and {张海涛} and {孟庆凯} and {柯志芳} and {范康迪} and {涂静涵} and {赵默雷} and {姚兆普} and {胡羽} and {赵之然} and {张旺旺}},
	month = oct,
	year = {2022},
}

@patent{YanQi2019Liang,
	title = {一种阵列式可控两相流流场发生装置},
	copyright = {All rights reserved},
	url = {https://d.wanfangdata.com.cn/patent/ChhQYXRlbnROZXdTMjAyNDExMjIxNjU4MjISE0NOMjAxOTEwNzUxODIxLjFfc3EaCDl0Z3Bvb3hl},
	abstract = {本发明公开了一种阵列式可控两相流流场发生装置，两相流为气液两相流，包括通过管路串联的两相流流场控制子系统和阵列式喷射子系统；两相流流场控制子系统分别从供气单元和供液单元获得气体和液体，并将从供气单元获得的气体分成一个以上流场压力不同的单相流支流A、将从供液单元获得的液体分成一个以上流场特征不同的单相流支流B；流场特征包括流速和压力；阵列式喷射子系统包括与一个以上单相流支流A和一个以上单相流支流B一一对应相接的两个以上的阵列式喷管；阵列式喷管将单相流支流A和单相流支流B分别喷射到流场测试段；流场测试段对一个以上单相流支流A和一个以上单相流支流B形成的两相流进行流场测试，测试完之后，将两相流排出。},
	nationality = {CN},
	language = {en},
	number = {ZL 2019107518211},
	author = {{闫清东} and {柯志芳} and {魏巍} and {刘城} and {郭猛} and {谢文浩}},
	month = jan,
	year = {2021},
	keywords = {/unread, ①待读0x, ②已读1x, ⑥收藏5x, ⑨Zotero},
}

本发明公开了一种阵列式可控两相流流场发生装置，两相流为气液两相流，包括通过管路串联的两相流流场控制子系统和阵列式喷射子系统；两相流流场控制子系统分别从供气单元和供液单元获得气体和液体，并将从供气单元获得的气体分成一个以上流场压力不同的单相流支流A、将从供液单元获得的液体分成一个以上流场特征不同的单相流支流B；流场特征包括流速和压力；阵列式喷射子系统包括与一个以上单相流支流A和一个以上单相流支流B一一对应相接的两个以上的阵列式喷管；阵列式喷管将单相流支流A和单相流支流B分别喷射到流场测试段；流场测试段对一个以上单相流支流A和一个以上单相流支流B形成的两相流进行流场测试，测试完之后，将两相流排出。

@article{guo_evaluation_2021,
	title = {Evaluation and {Validation} of {Viscous} {Oil} {Cavitation} {Model} {Used} in {Torque} {Converter}},
	volume = {11},
	copyright = {http://creativecommons.org/licenses/by/3.0/},
	issn = {2076-3417},
	url = {https://www.mdpi.com/2076-3417/11/8/3643},
	doi = {10.3390/app11083643},
	abstract = {Hydraulic torque converter is widely used in transmission units as it is able to provide variable speed and torque ratio, isolate vibration, and absorb shock. The pursuit of a highly packed power unit requires a high capacity/speed torque converter, consequently resulting in a higher risk for cavitation and severe performance degradation, noise, vibration, and even failure. Existing cavitation models generally focus on water, and the empirical parameters are not suitable for the cavitation prediction of torque converter which utilizes high viscosity oil as its working medium. This paper focused on the influence of parameters on the performance and cavitation characteristics of torque converter. A full flow passage geometry and different computational fluid dynamics (CFD) models with cavitation were developed to predict torque converter fluid behavior by resolving Reynolds-averaged Navier-Stokes equations using finite volume method (FVM). The numerical results indicated that nuclei volume fraction, vaporization coefficient, mean nucleation site radius, and maximum density ratio have great influences on the cavitation behavior. These parameters altered the degree of cavitation and the pressure distribution on the surface of stator blades, and affected the stall performance such as stall capacity factor and torque ratio. The cavitation model was then modified to improve calculation accuracy. The test results showed that the prediction error under stall operating condition was decreased from 6.7\% to 2\%. This study provides insight on the influences of the empirical parameters on both internal cavitation behavior as well as overall hydrodynamic performance.},
	language = {en-US},
	number = {8},
	urldate = {2021-11-09},
	journal = {APPLIED SCIENCES-BASEL},
	author = {Guo, M and Liu, C and Yan, QD and Ke, ZF and Wei, W and Li, J},
	month = apr,
	year = {2021},
	note = {110Cavitation
IF：2020：2.679；
tex.ids= Guo2021Evaluation},
	keywords = {/unread, CFD, cavitation parameter, cavitation vaporization coefficient, nuclei volume fraction, torque converter, ②已读1x, ⑨Zotero},
	pages = {3643},
}

Hydraulic torque converter is widely used in transmission units as it is able to provide variable speed and torque ratio, isolate vibration, and absorb shock. The pursuit of a highly packed power unit requires a high capacity/speed torque converter, consequently resulting in a higher risk for cavitation and severe performance degradation, noise, vibration, and even failure. Existing cavitation models generally focus on water, and the empirical parameters are not suitable for the cavitation prediction of torque converter which utilizes high viscosity oil as its working medium. This paper focused on the influence of parameters on the performance and cavitation characteristics of torque converter. A full flow passage geometry and different computational fluid dynamics (CFD) models with cavitation were developed to predict torque converter fluid behavior by resolving Reynolds-averaged Navier-Stokes equations using finite volume method (FVM). The numerical results indicated that nuclei volume fraction, vaporization coefficient, mean nucleation site radius, and maximum density ratio have great influences on the cavitation behavior. These parameters altered the degree of cavitation and the pressure distribution on the surface of stator blades, and affected the stall performance such as stall capacity factor and torque ratio. The cavitation model was then modified to improve calculation accuracy. The test results showed that the prediction error under stall operating condition was decreased from 6.7% to 2%. This study provides insight on the influences of the empirical parameters on both internal cavitation behavior as well as overall hydrodynamic performance.

@article{ke_dynamic_2020,
	title = {The dynamic wedging and friction characteristics of one-way clutch under transient loads from stator},
	volume = {152},
	copyright = {All rights reserved},
	issn = {0301-679X},
	url = {http://www.sciencedirect.com/science/article/pii/S0301679X20303984},
	doi = {10.1016/j.triboint.2020.106568},
	abstract = {The frictional characteristics, as well as its self-lock mechanism of the one-way clutch under working conditions were further explored. First of all, the wedge and friction characteristics of the one-way clutch under the corresponding working conditions were explored and analyzed by combining the transient-flow simulation and explicit dynamics. The results show that the loads transmitted by the stator and the one-way clutch are typical transient unsteady loads; during wedge process, both the transmission force and the contact stress of the one-way clutch are transient with an overshoot and finally converge. As for the wedging process, the self-lock characteristics turn out to be determined by the wedge angle and frictional coefficient, and influenced by the spring force.},
	language = {en-US},
	urldate = {2020-07-29},
	journal = {Tribology International},
	author = {Ke, ZF and Wei, W and Liu, C and Guo, M and Yan, QD},
	month = dec,
	year = {2020},
	note = {115OWC
t/IF：
2020：4.872；
2019：4.271；
2018：3.517；
2017：3.246；
2016：2.903；
2015：2.259；
JCR: Q1
中科院大类分区: 工程技术1区 Top
中科院小类分区: 工程：机械1区  
影响因子: 4.8724
5年影响因子: 4.7662
tex.ids= Ke2020Dynamic},
	keywords = {/unread, 115Cited-OWC, CFD, Explicit dynamic, PUMP-TURBINE, Self-lock, Torque converter, ②已读1x, ⑥收藏5x, ⑨Zotero},
	pages = {106568},
}

The frictional characteristics, as well as its self-lock mechanism of the one-way clutch under working conditions were further explored. First of all, the wedge and friction characteristics of the one-way clutch under the corresponding working conditions were explored and analyzed by combining the transient-flow simulation and explicit dynamics. The results show that the loads transmitted by the stator and the one-way clutch are typical transient unsteady loads; during wedge process, both the transmission force and the contact stress of the one-way clutch are transient with an overshoot and finally converge. As for the wedging process, the self-lock characteristics turn out to be determined by the wedge angle and frictional coefficient, and influenced by the spring force.

@article{__2020,
	title = {薄型涤纶织物的防水/液体分散染色连续加工},
	volume = {46},
	issn = {1000-4017},
	url = {https://kns.cnki.net/KCMS/detail/detail.aspx?dbcode=CJFQ&dbname=CJFDLAST2020&filename=YIRA202005007},
	abstract = {采用自制液体分散黑MP和防水剂对薄型涤纶织物进行防水与染色的一步法加工,考察了二种防水剂(含氟型防水剂2710和含硅型防水剂D14)质量分数对织物染色性、拒水性和残液吸光度的影响,比较了液体分散黑MP和市售粉状分散黑ECT在染液稳定性、织物防水性、耐摩擦色牢度和织物风格的差异。结果表明,液体分散黑MP能与防水剂2710或防水剂D14进行同浴连续染色,当防水剂质量分数为10\%时,L*值下降了10.3\%～13.0\%,水接触角为130°,耐摩擦色牢度达5级,热水洗残液色度仅为粉状分散黑ECT的1/7～1/8,是一种短流程低能耗的印染加工工艺。},
	language = {zh-CN},
	number = {5},
	urldate = {2025-09-26},
	journal = {印染},
	author = {{罗永平} and {胡会娜} and {徐明} and {朱亚伟}},
	year = {2020},
	note = {original-container-title: China Dyeing \& Finishing
download: 128
album: 工程科技Ⅰ辑
CLC: TS190.5
dbcode: CJFQ
dbname: CJFDLAST2020
filename: YIRA202005007
publicationTag: 北大核心, CAS, JST, WJCI
CIF: 1.245
AIF: 0.943
CNKICite: 4},
	keywords = {涤纶, 液体分散染料, 连续染色, 防水整理},
	pages = {32--35},
}

采用自制液体分散黑MP和防水剂对薄型涤纶织物进行防水与染色的一步法加工,考察了二种防水剂(含氟型防水剂2710和含硅型防水剂D14)质量分数对织物染色性、拒水性和残液吸光度的影响,比较了液体分散黑MP和市售粉状分散黑ECT在染液稳定性、织物防水性、耐摩擦色牢度和织物风格的差异。结果表明,液体分散黑MP能与防水剂2710或防水剂D14进行同浴连续染色,当防水剂质量分数为10%时,L*值下降了10.3%～13.0%,水接触角为130°,耐摩擦色牢度达5级,热水洗残液色度仅为粉状分散黑ECT的1/7～1/8,是一种短流程低能耗的印染加工工艺。

@article{yan__2020,
	title = {基于单流道瞬态仿真的旋转流体机械伪集总叶片法研究},
	volume = {40},
	copyright = {All rights reserved},
	issn = {10010645},
	url = {http://kns.cnki.net/kcms/detail/11.2596.T.20190929.1040.008.html},
	doi = {10.15918/j.tbit1001-0645.2019.08.415},
	abstract = {Since the higher cost and difficulty in mesh quality control of full blade simulation method, a pseudo-lumped-blade simulation method (PLSM) was proposed to analyse the blade-row interaction as well as its effect on the performance of the hydrodynamic torque converter. Firstly, a three-dimensional, transient, single-blade passage model was established based on a D400 hydrodynamic torque converter. And then the PLSM was used to calculate the time-independent blade's torque as well as the time-dependent impeller torque, so as to further study on the blade-row interaction effect and its impact on torque converter performance. Finally, the PLSM was validated in pump wheel, turbine and idler pulley samples. The results show that, the most error of the torque is less than 11.1\% and the analysis error for the original characteristic of torque converter is less than 4.37\%. It implies that PLSM is effective and reliable, and can not only reduce the calculation costs, but also be of great help to further study the blade-row interaction for hydrodynamic torque converters. © 2020, Editorial Department of Transaction of Beijing Institute of Technology. All right reserved.},
	language = {zh-CN},
	number = {3},
	journal = {北京理工大学学报},
	author = {Yan, Qing-Dong and Ke, Zhi-Fang and Wei, Wei and Li, Jin},
	year = {2020},
	note = {Publisher: Beijing Institute of Technology},
	keywords = {/unread, 111Cited-PLSM, Hydrodynamics, Quality control, Torque, Torque converters, Turbomachine blades, ②已读1x, ⑥收藏5x, ⑨Zotero},
	pages = {243--249},
}

Since the higher cost and difficulty in mesh quality control of full blade simulation method, a pseudo-lumped-blade simulation method (PLSM) was proposed to analyse the blade-row interaction as well as its effect on the performance of the hydrodynamic torque converter. Firstly, a three-dimensional, transient, single-blade passage model was established based on a D400 hydrodynamic torque converter. And then the PLSM was used to calculate the time-independent blade's torque as well as the time-dependent impeller torque, so as to further study on the blade-row interaction effect and its impact on torque converter performance. Finally, the PLSM was validated in pump wheel, turbine and idler pulley samples. The results show that, the most error of the torque is less than 11.1% and the analysis error for the original characteristic of torque converter is less than 4.37%. It implies that PLSM is effective and reliable, and can not only reduce the calculation costs, but also be of great help to further study the blade-row interaction for hydrodynamic torque converters. © 2020, Editorial Department of Transaction of Beijing Institute of Technology. All right reserved.

@article{yan_pseudo_2019,
	title = {Pseudo {Lamped}-{Blade} {Simulation} {Method} of {Turbomachinery} {Based} on {Single}-{Blade} {Transient} {Simulation}},
	volume = {40},
	copyright = {All rights reserved},
	issn = {10010645},
	doi = {10/ghnf98},
	abstract = {Since the higher cost and difficulty in mesh quality control of full blade simulation method, a pseudo-lumped-blade simulation method (PLSM) was proposed to analyse the blade-row interaction as well as its effect on the performance of the hydrodynamic torque converter. Firstly, a three-dimensional, transient, single-blade passage model was established based on a D400 hydrodynamic torque converter. And then the PLSM was used to calculate the time-independent blade's torque as well as the time-dependent impeller torque, so as to further study on the blade-row interaction effect and its impact on torque converter performance. Finally, the PLSM was validated in pump wheel, turbine and idler pulley samples. The results show that, the most error of the torque is less than 11.1\% and the analysis error for the original characteristic of torque converter is less than 4.37\%. It implies that PLSM is effective and reliable, and can not only reduce the calculation costs, but also be of great help to further study the blade-row interaction for hydrodynamic torque converters.  2020, Editorial Department of Transaction of Beijing Institute of Technology. All right reserved.},
	number = {3},
	journal = {Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology},
	author = {Yan, Qing-Dong and Ke, Zhi-Fang and Wei, Wei and Li, Jin},
	year = {2019},
	note = {111北理工学报},
	keywords = {Hydraulic torque converters, Hydrodynamics, Quality control, Torque, Turbomachine blades, ②已读1x, ⑥收藏5x, ⑨Zotero},
	pages = {243--249},
}

Since the higher cost and difficulty in mesh quality control of full blade simulation method, a pseudo-lumped-blade simulation method (PLSM) was proposed to analyse the blade-row interaction as well as its effect on the performance of the hydrodynamic torque converter. Firstly, a three-dimensional, transient, single-blade passage model was established based on a D400 hydrodynamic torque converter. And then the PLSM was used to calculate the time-independent blade's torque as well as the time-dependent impeller torque, so as to further study on the blade-row interaction effect and its impact on torque converter performance. Finally, the PLSM was validated in pump wheel, turbine and idler pulley samples. The results show that, the most error of the torque is less than 11.1% and the analysis error for the original characteristic of torque converter is less than 4.37%. It implies that PLSM is effective and reliable, and can not only reduce the calculation costs, but also be of great help to further study the blade-row interaction for hydrodynamic torque converters. 2020, Editorial Department of Transaction of Beijing Institute of Technology. All right reserved.

@patent{__2019,
	address = {中国},
	title = {一种阵列式可控两相流流场发生装置},
	abstract = {本发明公开了一种阵列式可控两相流流场发生装置，两相流为气液两相流，包括通过管路串联的两相流流场控制子系统和阵列式喷射子系统；两相流流场控制子系统分别从供气单元和供液单元获得气体和液体，并将从供气单元获得的气体分成一个以上流场压力不同的单相流支流A、将从供液单元获得的液体分成一个以上流场特征不同的单相流支流B；流场特征包括流速和压力；阵列式喷射子系统包括与一个以上单相流支流A和一个以上单相流支流B一一对应相接的两个以上的阵列式喷管；阵列式喷管将单相流支流A和单相流支流B分别喷射到流场测试段；流场测试段对一个以上单相流支流A和一个以上单相流支流B形成的两相流进行流场测试，测试完之后，将两相流排出。},
	nationality = {中国},
	language = {en},
	assignee = {北京理工大学},
	number = {ZL 201910751821.1},
	author = {{闫清东} and {柯志芳} and {魏巍} and {刘城} and {郭猛} and {谢文浩}},
	month = nov,
	year = {2019},
	note = {IPC: G01M10/00
CPC: G01M10/00},
}

本发明公开了一种阵列式可控两相流流场发生装置，两相流为气液两相流，包括通过管路串联的两相流流场控制子系统和阵列式喷射子系统；两相流流场控制子系统分别从供气单元和供液单元获得气体和液体，并将从供气单元获得的气体分成一个以上流场压力不同的单相流支流A、将从供液单元获得的液体分成一个以上流场特征不同的单相流支流B；流场特征包括流速和压力；阵列式喷射子系统包括与一个以上单相流支流A和一个以上单相流支流B一一对应相接的两个以上的阵列式喷管；阵列式喷管将单相流支流A和单相流支流B分别喷射到流场测试段；流场测试段对一个以上单相流支流A和一个以上单相流支流B形成的两相流进行流场测试，测试完之后，将两相流排出。

@inproceedings{ke_torque_2019,
	address = {Wuhan, China},
	series = {Proceedings of the 8th {International} {Conference} on {Fluid} {Power} and {Mechatronics}, {FPM} 2019},
	title = {Torque fluctuation in hydraulic torque converter},
	copyright = {All rights reserved},
	doi = {10.1109/FPM45753.2019.9035792},
	abstract = {In order to investigate the blade torque fluctuation mechanism and provide more insight into torque converter's internal flow field, this paper established both single-blade passage and full-blade passage transient simulation model. The time dependent blade torque results from single blade-passage simulation method is actually the torque of those blades which pass through the chosen blade passage range, which can be of great help to analysis the influence of the blade position on the torque pulsation results; while the blade torque from full-blade passage simulation method is actually the torque results of a chosen blade at different time, which can be used to analysis the time dependent result of the blade torque and its frequency results. Thus, the blade torque fluctuation was analyzed by a comprehensive study on transient time-dependent result and the blade space position relationship. The results indicated that the rotor-stator interaction between the stator-pump/turbine- stator, and the rotor-rotor interaction between the pumpturbine were inevitable in the torque converter. The study reveals that the relative blade position between pump and turbine with regard to stator would successively switch time by time, eventually leading to a blade torque fluctuation. Since the position of each blade in an impeller is different, a damping effect would occur when the blade torque is integrated to synthesize the impeller torque, consequently leading to a much smoother wheel torque characteristics.  2019 IEEE.},
	booktitle = {8th {IEEE} {International} {Conference} on {Fluid} {Power} and {Mechatronics}, {FPM} 2019, {April} 10, 2019  -  {April} 13, 2019},
	publisher = {Institute of Electrical and Electronics Engineers Inc.},
	author = {Ke, Zhifang and Wei, Wei and Yan, Qingdong and Liu, Cheng},
	year = {2019},
	note = {113FPM2019},
	keywords = {112Cited-FPM2019, Fluid Power, Hydraulic motors, Hydraulic torque converters, Impellers, Power converters, Stators, Torque, blade space position relationship, blade torque fluctuation mechanism, blade-row interaction, blades, full-blade passage simulation method, hydraulic torque converter, impeller torque, impellers, pumps, relative blade position, rotor-stator interaction, rotors, single blade-passage simulation method, stators, time dependent blade torque results, torque, torque fluctuation, torque pulsation results, transient simulation method, transient time-dependent result, wheel torque characteristics, wheels, ②已读1x, ⑥收藏5x, ⑨Zotero},
	pages = {579--591},
}

In order to investigate the blade torque fluctuation mechanism and provide more insight into torque converter's internal flow field, this paper established both single-blade passage and full-blade passage transient simulation model. The time dependent blade torque results from single blade-passage simulation method is actually the torque of those blades which pass through the chosen blade passage range, which can be of great help to analysis the influence of the blade position on the torque pulsation results; while the blade torque from full-blade passage simulation method is actually the torque results of a chosen blade at different time, which can be used to analysis the time dependent result of the blade torque and its frequency results. Thus, the blade torque fluctuation was analyzed by a comprehensive study on transient time-dependent result and the blade space position relationship. The results indicated that the rotor-stator interaction between the stator-pump/turbine- stator, and the rotor-rotor interaction between the pumpturbine were inevitable in the torque converter. The study reveals that the relative blade position between pump and turbine with regard to stator would successively switch time by time, eventually leading to a blade torque fluctuation. Since the position of each blade in an impeller is different, a damping effect would occur when the blade torque is integrated to synthesize the impeller torque, consequently leading to a much smoother wheel torque characteristics. 2019 IEEE.

@misc{_tcblading_2018,
	address = {Beijing},
	title = {{TCBLADing} 液力变矩器叶片造型软件},
	copyright = {All rights reserved},
	isbn = {2018SR915535},
	publisher = {BIT},
	author = {{刘城} and {柯志芳}},
	year = {2018},
	note = {登记号：2018SR915535},
	keywords = {②已读1x, ⑨Zotero},
}

@patent{Liu2015JiYuB,
	title = {基于贝塞尔曲线的液力变矩器二维叶片型线构造方法},
	copyright = {All rights reserved},
	url = {https://patents.google.com/patent/CN104613157A/zh},
	abstract = {本发明公开一种基于贝塞尔曲线的液力变矩器二维叶片型线构造方法，将贝塞尔曲线用于液力变矩器叶片的设计中，在给定液力变矩器的循环圆后，利用两段三次贝塞尔曲线控制点矩阵构造单元叶片骨线控制点矩阵及单元叶片厚度分布控制点矩阵，对构造的单元叶片骨线控制点矩阵进行旋转、放大获得实际叶片骨线控制点矩阵，同时单元叶片厚度分布控制点矩阵进行放大获得实际叶片厚度分布控制点矩阵，获得实际叶片骨线控制点矩阵和实际叶片厚度分布控制点矩阵后，用三次贝塞尔曲线构造叶片骨线和实际叶片厚度分布，最后将获得的实际叶片厚度分布叠加到获得的实际叶片骨线上最终获得叶片二维型线。本发明能够增加二维叶片型线的设计的鲁棒性、适应性及灵活性，设计参数简洁、直观。},
	nationality = {CN},
	language = {zh-CN},
	assignee = {北京理工大学},
	number = {ZL 2015100367231},
	urldate = {2017-05-10},
	author = {刘城 and 闫清东 and 魏巍 and 柯志芳},
	month = may,
	year = {2017},
	note = {abstractTranslation:},
	keywords = {bezier, blade, bone, line, thickness, ②已读1x, ⑨Zotero},
}

本发明公开一种基于贝塞尔曲线的液力变矩器二维叶片型线构造方法，将贝塞尔曲线用于液力变矩器叶片的设计中，在给定液力变矩器的循环圆后，利用两段三次贝塞尔曲线控制点矩阵构造单元叶片骨线控制点矩阵及单元叶片厚度分布控制点矩阵，对构造的单元叶片骨线控制点矩阵进行旋转、放大获得实际叶片骨线控制点矩阵，同时单元叶片厚度分布控制点矩阵进行放大获得实际叶片厚度分布控制点矩阵，获得实际叶片骨线控制点矩阵和实际叶片厚度分布控制点矩阵后，用三次贝塞尔曲线构造叶片骨线和实际叶片厚度分布，最后将获得的实际叶片厚度分布叠加到获得的实际叶片骨线上最终获得叶片二维型线。本发明能够增加二维叶片型线的设计的鲁棒性、适应性及灵活性，设计参数简洁、直观。

@patent{__2017,
	title = {基于保形变换的液力变矩器直纹叶片三维造型方法},
	copyright = {All rights reserved},
	url = {https://patents.google.com/patent/CN104573207B/en?inventor=%E6%9F%AF%E5%BF%97%E8%8A%B3},
	nationality = {CN},
	language = {zh-CN},
	assignee = {北京理工大学},
	number = {ZL 2014108317452},
	urldate = {2017-09-19},
	author = {刘城 and 闫清东 and 魏巍 and 柯志芳},
	month = sep,
	year = {2017},
	keywords = {blade, curve, dimensional, inner, outer, ②已读1x, ⑨Zotero},
}

@patent{__2017-1,
	title = {一种机械传动的手指假肢},
	copyright = {All rights reserved},
	url = {https://patents.google.com/patent/CN104146800B/zh?inventor=%E6%9F%AF%E5%BF%97%E8%8A%B3},
	nationality = {CN},
	language = {zh-CN},
	assignee = {北京理工大学},
	number = {ZL 2014104262836},
	urldate = {2017-01-04},
	author = {苏伟 and 李忠新 and 王露萱 and 苏江舟 and 柯志芳},
	month = jan,
	year = {2017},
	keywords = {finger, knuckle, middle section, near, section, ②已读1x},
}

@patent{__2016,
	address = {中国},
	title = {一种幕墙清洗装置},
	abstract = {本发明提出一种幕墙清洗装置，包括爬行系统、清洗系统和控制系统；爬行系统包括外足板和内足板；外足板的上表面设有外气缸，外气缸具有活塞杆，外气缸的活塞杆的端头通过外吸盘连接件固定有外吸盘，外吸盘位于外足板的下表面侧；外足板的上表面设有直线轴承，直线轴承上设有直线导轨，直线轴承两端的外足板上设有限位板；外足板上设有穿通口；外足板的一端设有清洗气缸，清洗气缸的活塞杆的端头连接清洗系统；内足板固定在直线导轨上，内足板的上表面设有内气缸，内气缸的活塞杆的端头通过内吸盘连接件固定有内吸盘，内吸盘连接件穿过穿通口，使内吸盘位于外足板的下表面侧；控制系统位于内足板上。本发明越障能力强，质量轻。},
	nationality = {中国},
	assignee = {宸盛科华（北京）科技有限公司},
	number = {CN105212843A},
	author = {{贾强} and {刘卉元} and {李晋} and {曲贺} and {贾辉} and {柯志芳} and {娄伟鹏}},
	month = jan,
	year = {2016},
	note = {IPC: A47L11/38},
}

本发明提出一种幕墙清洗装置，包括爬行系统、清洗系统和控制系统；爬行系统包括外足板和内足板；外足板的上表面设有外气缸，外气缸具有活塞杆，外气缸的活塞杆的端头通过外吸盘连接件固定有外吸盘，外吸盘位于外足板的下表面侧；外足板的上表面设有直线轴承，直线轴承上设有直线导轨，直线轴承两端的外足板上设有限位板；外足板上设有穿通口；外足板的一端设有清洗气缸，清洗气缸的活塞杆的端头连接清洗系统；内足板固定在直线导轨上，内足板的上表面设有内气缸，内气缸的活塞杆的端头通过内吸盘连接件固定有内吸盘，内吸盘连接件穿过穿通口，使内吸盘位于外足板的下表面侧；控制系统位于内足板上。本发明越障能力强，质量轻。

@patent{__2016-1,
	title = {一种实现双向自由度的手指假肢},
	copyright = {All rights reserved},
	url = {https://patents.google.com/patent/CN104146799B/en?inventor=%E8%8B%8F%E6%B1%9F%E8%88%9F},
	nationality = {CN},
	language = {zh-CN},
	assignee = {北京理工大学},
	number = {ZL 2014104250063},
	urldate = {2016-04-27},
	author = {苏伟 and 李忠新 and 王露萱 and 苏江舟 and 柯志芳},
	month = apr,
	year = {2016},
	keywords = {axis, bevel gear, cam groove, rotor, susceptor, ②已读1x},
}

@patent{__2016-2,
	title = {可调控柔性弯曲式四足机器人仿生腰椎结构体系},
	copyright = {All rights reserved},
	url = {https://patents.google.com/patent/CN103303389A/zh},
	abstract = {可调控柔性弯曲式四足机器人仿生腰椎结构体系属于一种新型四足机器人仿生腰椎结构体系。针对现有机器人往往忽略动物腰椎的功能或引入后未充分发挥其功能的现象，本发明提供了一种可调控柔性弯曲式四足机器人仿生腰椎结构体系，该结构体系充分发挥了对猎豹腰椎的结构仿生和功能仿生，通过适度弯曲的弹簧钢板连接，加上双向反螺旋快速调节机构的快速运动与协调控制，可以实现四足机器人的爆发起跳、四足顺畅收拢和展开以及特定身姿的定格等功能；与此同时还充分利用了弹簧钢板的吸能减震的作用；弹簧钢板的连接处所设置的多组连接螺纹孔可实现对前后腰椎位置的控制，从而增加了对机器人整体长度尺寸的可调控性。},
	nationality = {CN},
	language = {zh-CN},
	assignee = {北京理工大学},
	number = {ZL 2013102848805},
	urldate = {2016-02-03},
	author = {罗庆生 and 柯志芳 and 周晨阳 and 黄炎崧 and 刘芳政 and 张博希 and 高剑锋},
	month = feb,
	year = {2016},
	keywords = {adjustable, bionic, lumbar, lumbar vertebrae, robot, ②已读1x},
}

可调控柔性弯曲式四足机器人仿生腰椎结构体系属于一种新型四足机器人仿生腰椎结构体系。针对现有机器人往往忽略动物腰椎的功能或引入后未充分发挥其功能的现象，本发明提供了一种可调控柔性弯曲式四足机器人仿生腰椎结构体系，该结构体系充分发挥了对猎豹腰椎的结构仿生和功能仿生，通过适度弯曲的弹簧钢板连接，加上双向反螺旋快速调节机构的快速运动与协调控制，可以实现四足机器人的爆发起跳、四足顺畅收拢和展开以及特定身姿的定格等功能；与此同时还充分利用了弹簧钢板的吸能减震的作用；弹簧钢板的连接处所设置的多组连接螺纹孔可实现对前后腰椎位置的控制，从而增加了对机器人整体长度尺寸的可调控性。

@patent{__2016-3,
	title = {一种具有多自由度的纯机械式可穿戴手指假肢},
	copyright = {All rights reserved},
	url = {https://patents.google.com/patent/CN104306087B/zh?inventor=%E6%9F%AF%E5%BF%97%E8%8A%B3},
	nationality = {CN},
	language = {zh-CN},
	assignee = {北京理工大学},
	number = {CN104306087B},
	urldate = {2016-06-22},
	author = {苏伟 and 李忠新 and 王露萱 and 苏江舟 and 柯志芳},
	month = jun,
	year = {2016},
	keywords = {finger, index, index finger, section, thumb, ②已读1x},
}

@patent{__2015,
	address = {中国},
	title = {基于贝塞尔曲线的液力变矩器二维叶片型线构造方法},
	abstract = {本发明公开一种基于贝塞尔曲线的液力变矩器二维叶片型线构造方法，将贝塞尔曲线用于液力变矩器叶片的设计中，在给定液力变矩器的循环圆后，利用两段三次贝塞尔曲线控制点矩阵构造单元叶片骨线控制点矩阵及单元叶片厚度分布控制点矩阵，对构造的单元叶片骨线控制点矩阵进行旋转、放大获得实际叶片骨线控制点矩阵，同时单元叶片厚度分布控制点矩阵进行放大获得实际叶片厚度分布控制点矩阵，获得实际叶片骨线控制点矩阵和实际叶片厚度分布控制点矩阵后，用三次贝塞尔曲线构造叶片骨线和实际叶片厚度分布，最后将获得的实际叶片厚度分布叠加到获得的实际叶片骨线上最终获得叶片二维型线。本发明能够增加二维叶片型线的设计的鲁棒性、适应性及灵活性，设计参数简洁、直观。},
	nationality = {中国},
	assignee = {北京理工大学},
	number = {CN104613157A},
	author = {{刘城} and {闫清东} and {魏巍} and {柯志芳}},
	month = may,
	year = {2015},
	note = {IPC: F16H41/28
CPC: F16H41/28},
}

本发明公开一种基于贝塞尔曲线的液力变矩器二维叶片型线构造方法，将贝塞尔曲线用于液力变矩器叶片的设计中，在给定液力变矩器的循环圆后，利用两段三次贝塞尔曲线控制点矩阵构造单元叶片骨线控制点矩阵及单元叶片厚度分布控制点矩阵，对构造的单元叶片骨线控制点矩阵进行旋转、放大获得实际叶片骨线控制点矩阵，同时单元叶片厚度分布控制点矩阵进行放大获得实际叶片厚度分布控制点矩阵，获得实际叶片骨线控制点矩阵和实际叶片厚度分布控制点矩阵后，用三次贝塞尔曲线构造叶片骨线和实际叶片厚度分布，最后将获得的实际叶片厚度分布叠加到获得的实际叶片骨线上最终获得叶片二维型线。本发明能够增加二维叶片型线的设计的鲁棒性、适应性及灵活性，设计参数简洁、直观。

@patent{__2015-1,
	address = {中国},
	title = {基于保形变换的液力变矩器直纹叶片三维造型方法},
	abstract = {本发明公开一种基于保形变换的液力变矩器直纹叶片三维造型方法，利用保形变换进行二维叶片型线与三维叶片曲线之间的转换，可以实现二维叶片型线到三维叶片曲线的无误差映射，提高叶片设计精度。具体为：在给定液力变矩器的循环圆及叶片二维叶片型线后，以直叶片为基准，结合给定的二维叶片内、外环型线映射到循环圆圆面上，变形为三维叶片内、外环曲线，获得三维叶片内、外环曲线后，将三维叶片外环曲线调整到指定位置，用直线扫掠三维叶片内环曲线和调整后的三维叶片外环曲线，便可获得直纹面叶片三维实体。},
	nationality = {中国},
	assignee = {北京理工大学},
	number = {CN104573207A},
	author = {{刘城} and {闫清东} and {魏巍} and {柯志芳}},
	month = apr,
	year = {2015},
	note = {IPC: G06F17/50},
}

本发明公开一种基于保形变换的液力变矩器直纹叶片三维造型方法，利用保形变换进行二维叶片型线与三维叶片曲线之间的转换，可以实现二维叶片型线到三维叶片曲线的无误差映射，提高叶片设计精度。具体为：在给定液力变矩器的循环圆及叶片二维叶片型线后，以直叶片为基准，结合给定的二维叶片内、外环型线映射到循环圆圆面上，变形为三维叶片内、外环曲线，获得三维叶片内、外环曲线后，将三维叶片外环曲线调整到指定位置，用直线扫掠三维叶片内环曲线和调整后的三维叶片外环曲线，便可获得直纹面叶片三维实体。

@book{__2011,
	address = {北京},
	series = {Understand\_While\_Reading\_Tao\_Te\_Ching},
	title = {《道德经》一读就懂},
	isbn = {978-7-5117-0855-7},
	publisher = {中央编译出版社},
	author = {{王晓梅} and {李芳芳}},
	month = jun,
	year = {2011},
}

@misc{linus_100-lie_100,
	title = {*100-{LiE} {File} {Library} {System}},
	abstract = {File Library System是一个「一次搭建，终生受用」的电脑文件管理方案。

第一部分：001 inbox

文件中转站，inbox是一套高效处理信息、战胜信息混杂的机制，我们将全部文件先放在inbox体系里中转，处理完转存到「主体文件库」中；



第二部分：X00 MainFiles

主体文件库，使用唯一维度分类，分成工作、学习、生活和兴趣爱好四大类文件夹，以项目为单位建立单个文件夹，这种方法搭建主体文件库，将庞杂的文件整理分类；



第三部分：Z00 Archive

文件归档库，将完成了的项目中多余文件删除，必要文件进行整理归档后保存，以便节省空间，同时便于以后调用。},
	author = {{Linus}},
	year = {100},
	keywords = {⑨Zotero},
}

File Library System是一个「一次搭建，终生受用」的电脑文件管理方案。 第一部分：001 inbox 文件中转站，inbox是一套高效处理信息、战胜信息混杂的机制，我们将全部文件先放在inbox体系里中转，处理完转存到「主体文件库」中； 第二部分：X00 MainFiles 主体文件库，使用唯一维度分类，分成工作、学习、生活和兴趣爱好四大类文件夹，以项目为单位建立单个文件夹，这种方法搭建主体文件库，将庞杂的文件整理分类； 第三部分：Z00 Archive 文件归档库，将完成了的项目中多余文件删除，必要文件进行整理归档后保存，以便节省空间，同时便于以后调用。

@misc{linus_100-zotero_100,
	type = {Blog},
	title = {*100-用{Zotero构建我的文献生态} {\textbar} {iKirt} {Blog}},
	copyright = {http://mp.weixin.qq.com/s?\_\_biz=MzAxNzgyMDg0MQ==\&mid=2650457775\&idx=1\&sn=5393850aa646cf1e1f28e844f2d6738c\&chksm=83d1db69b4a6527fb813cf5b1f335eee310cc5f1383e504e42d9563d2ccecdf8c74b346416b6\#rd},
	shorttitle = {{全网最全Zotero文献管理教程}！},
	url = {https://linuskirt.github.io/2020/10/26/%E7%94%A8Zotero%E6%9E%84%E5%BB%BA%E6%88%91%E7%9A%84%E6%96%87%E7%8C%AE%E7%94%9F%E6%80%81/},
	abstract = {个人搜集关于Zotero文献管理全面教程资料！},
	urldate = {2021-03-08},
	journal = {linuskirt.github.io},
	author = {{Linus}},
	year = {100},
	note = {ZSCC: NoCitationData[s0]},
	keywords = {⑨Zotero},
}

个人搜集关于Zotero文献管理全面教程资料！

@misc{linus_100-bithydro_100,
	title = {*100-{BitHydro} {KCS资料分类法}},
	author = {{Linus}},
	year = {100},
	keywords = {⑨Zotero},
}

@misc{linus_107-publication_100,
	title = {107-{Publication} of {Linus}},
	url = {https://bibbase.org/show?bib=https%3A%2F%2Fapi.zotero.org%2Fusers%2F4565987%2Fcollections%2FM54DLFMJ%2Fitems%3Fkey%3DiSVXJRDvOQNjLgEiYHlQ2mRP%26format%3Dbibtex%26limit%3D100&msg=embed#},
	urldate = {2021-02-17},
	journal = {BibBase},
	author = {Linus, Kirt},
	year = {100},
	note = {JavaScript code for this Page:
{\textless}script src="https://bibbase.org/show?bib=https\%3A\%2F\%2Fapi.zotero.org\%2Fusers\%2F4565987\%2Fcollections\%2FM54DLFMJ\%2Fitems\%3Fkey\%3DiSVXJRDvOQNjLgEiYHlQ2mRP\%26format\%3Dbibtex\%26limit\%3D100\&jsonp=1"{\textgreater}{\textless}/script{\textgreater}},
}

@misc{zhifang_ke_0000-0002-5010-1972_nodate,
	address = {Beijing},
	title = {0000-0002-5010-1972},
	url = {https://orcid.org/0000-0002-5010-1972},
	abstract = {的 ORCID 记录 Zhifang Ke. ORCID 为个人提供了标识符，可在从事研究、学术和创新活动时与其姓名一起使用。},
	language = {en},
	urldate = {2023-06-28},
	journal = {ORCID},
	author = {{Zhifang Ke}},
	note = {titleTranslation:
titleTranslation:
abstractTranslation: Beijing Institute of Technology
titleTranslation:},
}

的 ORCID 记录 Zhifang Ke. ORCID 为个人提供了标识符，可在从事研究、学术和创新活动时与其姓名一起使用。