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Old   December 14, 2016, 06:41
Unhappy Unsteady Optimization
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Tom
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Hi

In the unsteady optimization SU2_DOT cannot compute the gradients.

I test all of the provided TestCases. the gradient are always:


---------- Start gradient evaluation using sensitivity information ----------
Evaluate functional gradient using Finite Differences.

Design variable (HICKS_HENNE) number 0.
DRAG gradient : -nan
-------------------------------------------------------------------------

Design variable (HICKS_HENNE) number 1.
DRAG gradient : -nan
-------------------------------------------------------------------------

Design variable (HICKS_HENNE) number 2.
DRAG gradient : -nan



I attach the config file for pitching_naca64a010 euler optimization. I just modified the file to calculate 3 time step and then move on to continuous adjoint.

It would be great if someone else can run this simulation and check if the same thing happened.

the command is: continuous_adjoint.py -f pitching_NACA64A010.cfg -n 2

Thanks alot
Attached Files
File Type: txt pitching_naca64a010.txt (13.7 KB, 3 views)
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Old   December 16, 2016, 03:37
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Tom
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still nobody test the issue???




I went through the source code, every thing seems just fine!!!!
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Old   December 26, 2016, 00:39
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this problem is killing me, no body has any ideas??????????
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