A numerical study of adaptive FFD in aerodynamic shape optimization

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
A numerical study of adaptive FFD in aerodynamic shape optimization
Original language description
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.
Czech name
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Czech description
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Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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