Detail publikačního výsledku

A numerical study of adaptive FFD in aerodynamic shape optimization

AMOIGNON, O.; HRADIL, J.; NAVRÁTIL, J.

Originální název

A numerical study of adaptive FFD in aerodynamic shape optimization

Anglický název

A numerical study of adaptive FFD in aerodynamic shape optimization

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

numerical, FFD, aerodynamic, shape optimization

Klíčová slova v angličtině

numerical, FFD, aerodynamic, shape optimization

Autoři

AMOIGNON, O.; HRADIL, J.; NAVRÁTIL, J.

Rok RIV

2017

Vydáno

17.01.2014

Nakladatel

AIAA

ISBN

978-1-62410-256-1

Kniha

52nd AIAA Aerospace Sciences Meeting

Strany od

1

Strany do

11

Strany počet

11

Plný text v Digitální knihovně

http://hdl.handle.net/

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"
}