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Shape optimization of a multi element airfoil

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Old   April 22, 2015, 09:08
Default Shape optimization of a multi element airfoil
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Hi, i'm using SU2 for my thesis and i'm trying to do the optimization of a two element airfoil.
The purpose is to make a comparison between the FFD and the H-H methods and to optimize, with the method i'll choose, a particular airfoil for automotive application. Now i'm running the euler optimization and i can't understand why the flap deformation is irregular while the main airfoil seems to be good. Schermata del 2015-04-22 15:05:01.jpg

Schermata del 2015-04-22 15:06:39.jpg
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Old   May 19, 2015, 16:51
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Santiago Padron
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In the code, a classical implementation of the Hicks-Henne bumps is implemented. This implementation assumes an airfoil between 0 and 1 and at 0degree angle of attack. You can try changing this in the code (CSurfaceMovement::SetHicksHenne in the file to fit your particular case. Or you can also change your mesh so that both airfoils are contained between 0 and 1.

In any case, I would recommend using FFD boxes for the multi-element airfoil.
And compare FFD boxes with H-H for single airfoils.
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