A numerical study of adaptive FFD in aerodynamic shape optimization

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F14%3APU107801" target="_blank" >RIV/00216305:26210/14:PU107801 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.2514/6.2014-0899" target="_blank" >http://dx.doi.org/10.2514/6.2014-0899</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2514/6.2014-0899" target="_blank" >10.2514/6.2014-0899</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A numerical study of adaptive FFD in aerodynamic shape optimization

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

A numerical study of adaptive FFD in aerodynamic shape optimization

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

JU - Aeronautika, aerodynamika, letadla

OECD FORD obor

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Projekt

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Návaznosti

R - Projekt Ramcoveho programu EK

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

52nd AIAA Aerospace Sciences Meeting

ISBN

978-1-62410-256-1

ISSN

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e-ISSN

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Počet stran výsledku

11

Strana od-do

1-11

Název nakladatele

AIAA

Místo vydání

Neuveden

Místo konání akce

National Harbor, Maryland

Datum konání akce

13. 1. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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