Freeform Deformation Versus B-Spline Representation in Inverse Airfoil Design. Amoiralis, E. I. & Nikolos, I. K. Journal of Computing and Information Science in Engineering, 8(2):024001–024001, ASME, April, 2008. doi abstract bibtex Freeform deformation (FFD) is a well established technique for 3D animation applications, used to deform two—or three- dimensional geometrical entities. Over the past few years, FFD technique has aroused growing interest in several scientific com- munities. In this work, an extensive bibliographic survey of the FFD technique is initially introduced, in order to explore its ca- pabilities in shape parametrization. Moreover, FFD technique is compared to the classical parametrization technique using B-spline curves, in the context of the airfoil design optimization problem, by performing inverse airfoil design tests, with a differ- ential evolution algorithm to serve as the optimizer. The criterion of the comparison between the two techniques is the achieved accuracy in the approximation of the reference pressure distribu- tion. Experiments are presented, comparing FFD to B-spline tech- niques under the same flow conditions, for various numbers of design variables. Sensitivity analysis is applied for providing fur- ther insight into the differences in the performance of the two techniques.
@Article{ Amoiralis_2008aa,
abstract = {Freeform deformation (FFD) is a well established technique for 3D animation applications, used to deform two—or three- dimensional geometrical entities. Over the past few years, FFD technique has aroused growing interest in several scientific com- munities. In this work, an extensive bibliographic survey of the FFD technique is initially introduced, in order to explore its ca- pabilities in shape parametrization. Moreover, FFD technique is compared to the classical parametrization technique using B-spline curves, in the context of the airfoil design optimization problem, by performing inverse airfoil design tests, with a differ- ential evolution algorithm to serve as the optimizer. The criterion of the comparison between the two techniques is the achieved accuracy in the approximation of the reference pressure distribu- tion. Experiments are presented, comparing FFD to B-spline tech- niques under the same flow conditions, for various numbers of design variables. Sensitivity analysis is applied for providing fur- ther insight into the differences in the performance of the two techniques.},
author = {Amoiralis, Eleftherios I. and Nikolos, Ioannis K.},
doi = {10.1115/1.2906694},
file = {Amoiralis_2008aa.pdf},
issn = {1530-9827},
journal = {Journal of Computing and Information Science in Engineering},
keywords = {spline,freeform,optimization},
langid = {english},
month = apr,
number = {2},
pages = {024001--024001},
publisher = {ASME},
title = {Freeform Deformation Versus B-Spline Representation in Inverse Airfoil Design},
volume = {8},
year = {2008},
shortjournal = {JCISE}
}
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