Gradient with respect to airfoil coordinates

Ry10 · February 26, 2016, 13:40

I have a mesh of a 2D airfoil. I want to get the gradient of lift with respect to the airfoil coordinates. I thought the best design variable would be DISPLACEMENT. So in the DEFINITION_DV, I put (5, 1.0 | airfoil | x_coord, y_coord, 0.0). However I get the error

Code:

DV_KIND: invalid option value DISPLACEMENT. Check current SU2 options in config_template.cfg.

The config_template says you can use DISPLACEMENT as a design variable, so why does it not work? Would another option be better for what I'm trying to do?

talbring · February 27, 2016, 06:46

Hi Ryan,

this information is independent of the actual design variables and is provided by the continuous or discrete adjoint solver. After running the solver you will find a file named surface_adjoint.dat in the directory.

February 26, 2016, 13:40	Gradient with respect to airfoil coordinates	#1
Ry10 New Member Ryan Barrett Join Date: May 2015 Posts: 15 Rep Power: 11	I have a mesh of a 2D airfoil. I want to get the gradient of lift with respect to the airfoil coordinates. I thought the best design variable would be DISPLACEMENT. So in the DEFINITION_DV, I put (5, 1.0 \| airfoil \| x_coord, y_coord, 0.0). However I get the error Code: DV_KIND: invalid option value DISPLACEMENT. Check current SU2 options in config_template.cfg. The config_template says you can use DISPLACEMENT as a design variable, so why does it not work? Would another option be better for what I'm trying to do?

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February 27, 2016, 06:46		#2
talbring Super Moderator Tim Albring Join Date: Sep 2015 Posts: 195 Rep Power: 11	Hi Ryan, this information is independent of the actual design variables and is provided by the continuous or discrete adjoint solver. After running the solver you will find a file named surface_adjoint.dat in the directory.