Publication detail

A numerical study of adaptive FFD in aerodynamic shape optimization

AMOIGNON, O. HRADIL, J. NAVRÁTIL, J.

English title

A numerical study of adaptive FFD in aerodynamic shape optimization

Type

Paper in proceedings (conference paper)

Language

en

Original abstract

This work presents a Free Form Deformation (FFD) method for shape parameterization and applications on aerodynamic aircraft design. Our objective is to accurately resolve problems of shape optimization including geometric constraints. Here we couple an FFD based on NURBS with a Radial Basis Function (RBF) in order to improve the control of the deformations and enable a more accurate resolution of constraints even when using a coarse lattice. Our investigations also focus on efficiency, showing for instance that the highest NURBS degree improve the resolution of the optimization problem when the solution is a smooth shape in 2D without influencing the cost of optimization. This indicates a mean to avoid wiggles in shapes deformed by FFD without deteriorating the condition of the problem. Other applications in 2D and 3D also illustrate the behaviour of the FFD parameterization when refining or adapting the position of the lattice vertices.

Keywords in English

numerical, FFD, aerodynamic, shape optimization

Released

2014-01-17

Publisher

AIAA

ISBN

978-1-62410-256-1

Book

52nd AIAA Aerospace Sciences Meeting

Pages from–to

1–11

Pages count

11

BIBTEX


@inproceedings{BUT105565,
  author="Olivier {Amoignon} and Jiří {Hradil} and Jan {Navrátil}",
  title="A numerical study of adaptive FFD in aerodynamic shape optimization",
  booktitle="52nd AIAA Aerospace Sciences Meeting",
  year="2014",
  pages="1--11",
  publisher="AIAA",
  doi="10.2514/6.2014-0899",
  isbn="978-1-62410-256-1"
}