Freeform Deformation Versus B-Spline Representation in Inverse Airfoil Design

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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