A Parametric Study for Kinetic Modeling of Emissive Sheaths Using Electrostatic Particle-in-Cell Method. Vatansever, D., Nuwal, N., & Levin, D. A. In AIAA AVIATION 2022 Forum, 2022. AIAA Paper 2022-3361.
A Parametric Study for Kinetic Modeling of Emissive Sheaths Using Electrostatic Particle-in-Cell Method [link]Paper  abstract   bibtex   
View Video Presentation: https://doi.org/10.2514/6.2022-3361.vidA one-dimensional collisionless space charge limited (SCL) sheath is solved by using electro-static Particle-in-cell (PIC) method. We conduct a parametric study with different plasma conditions to understand the emissive nature of SCL sheaths and electron transpiration cooling (ETC) of the surface in high-speed flows. It is seen that potential profile along a 1-D plasma is sensitive to changes of the ion to electron mass ratio (mi/me), the electron emission temperature (Temit), the number of emitted particles (Nemit) and length of the plasma slab (L). We observe that the emitted electrons with higher energies escape the SCL sheath more easily but others are trapped within the SCL sheath. The thermionic emission from the emitting wall increases with increased ion to electron mass ratio and electron emission temperature but becomes less when the length of plasma is increased.
@inproceedings{vatansever2022,
	title = {A {Parametric} {Study} for {Kinetic} {Modeling} of {Emissive} {Sheaths} {Using} {Electrostatic} {Particle}-in-{Cell} {Method}},
	url = {https://arc.aiaa.org/doi/abs/10.2514/6.2022-3361},
	abstract = {View Video Presentation: https://doi.org/10.2514/6.2022-3361.vidA one-dimensional collisionless space charge limited (SCL) sheath is solved by using electro-static Particle-in-cell (PIC) method. We conduct a parametric study with different plasma conditions to understand the emissive nature of SCL sheaths and electron transpiration cooling (ETC) of the surface in high-speed flows. It is seen that potential profile along a 1-D plasma is sensitive to changes of the ion to electron mass ratio (mi/me), the electron emission temperature (Temit), the number of emitted particles (Nemit) and length of the plasma slab (L). We observe that the emitted electrons with higher energies escape the SCL sheath more easily but others are trapped within the SCL sheath. The thermionic emission from the emitting wall increases with increased ion to electron mass ratio and electron emission temperature but becomes less when the length of plasma is increased.},
	urldate = {2024-04-12},
	booktitle = {{AIAA} {AVIATION} 2022 {Forum}},
	publisher = {AIAA Paper 2022-3361},
	author = {Vatansever, Davut and Nuwal, Nakul and Levin, Deborah A.},
	year = {2022},
}

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