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SU2_DOT - Gradients of the "Quick Start" case.

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Old   August 19, 2021, 15:53
Default SU2_DOT - Gradients of the "Quick Start" case.
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Pedro Paulo
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Hi,

I am trying to obtain the gradients regarding the drag obj function using the "Quick Start" case. (Continuous Adj.)

However, when executing the SU2_DOT module the output is just a scalar:

DRAG gradient
-0.0180529


I was expecting the output to be a vector, representing the gradient of the surface for the NACA 0012 geometry.

Can someone explain this to me? Is there something I should change in the inv_NACA0012_basic.cfg file to get the gradient to be a vector and not a scalar?

Thanks.
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Old   August 21, 2021, 18:46
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pcg
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That is the derivative of the design parameters defined in the config, i.e. DV_PARAM= ( 1, 0.5 )

The "raw" geometric sensitivities are in the output file (.vtk .vtu etc.) of the solver.
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Old   August 25, 2021, 12:47
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Quote:
Originally Posted by pcg View Post
That is the derivative of the design parameters defined in the config, i.e. DV_PARAM= ( 1, 0.5 )

The "raw" geometric sensitivities are in the output file (.vtk .vtu etc.) of the solver.
Thank you for answering!
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