SU2 AD solver blowing up

kaush · June 15, 2018, 05:33

Hi

I am running the AD solver in RANS mode to compute the drag sensitivities of onera M6 wing. I have validated the case given in

https://su2code.github.io/tutorials/...ined_NACA0012/

for the naca0012 airfoil. For the onera case validation I am using the grid provided in the testcase suite

https://su2code.github.io/tutorials/Turbulent_ONERAM6/

However when I run the case the adjoint solver blows up. I have tried many options like changing the cost functional, reducing the CFL for the adjoint solver, changing the discretization but none seems to work. I am hereby attaching the cfg file I have used for the latest computation(Had to change the extension to .txt). Any insights will be highly appreciated.

Regards

talbring · June 29, 2018, 07:31

I just tested it with the files provided in the tutorial and it works for me.

kaush · July 2, 2018, 00:44

Thanks,
That is surprising!
Can you please share the .cfg file details..or is it the same file as the one I shared?

regards

talbring · July 3, 2018, 06:57

Just use the ones provided in the tutorial:

https://su2code.github.io/tutorials/Turbulent_ONERAM6/

kaush · July 3, 2018, 08:09

Absolutely fine!..we get the results of the tutorial gives for the continious adjoints. Only having trouble with the discrete adjoints. Please do run the discrete_adjoint.py with the setting given in the .cfg file I have posted you would notice a blow up of the adjoint solver..

June 29, 2018, 07:31		#2
talbring Super Moderator Tim Albring Join Date: Sep 2015 Posts: 195 Rep Power: 11	I just tested it with the files provided in the tutorial and it works for me. __________________ Developer Director @ SU2 Foundation Get involved: Facebook https://www.facebook.com/su2code Github https://github.com/su2code Twitter https://twitter.com/su2code

July 3, 2018, 06:57		#4
talbring Super Moderator Tim Albring Join Date: Sep 2015 Posts: 195 Rep Power: 11	Just use the ones provided in the tutorial: https://su2code.github.io/tutorials/Turbulent_ONERAM6/ __________________ Developer Director @ SU2 Foundation Get involved: Facebook https://www.facebook.com/su2code Github https://github.com/su2code Twitter https://twitter.com/su2code

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July 2, 2018, 00:44		#3
kaush New Member Join Date: Jun 2017 Posts: 19 Rep Power: 9	Thanks, That is surprising! Can you please share the .cfg file details..or is it the same file as the one I shared? regards

July 3, 2018, 08:09		#5
kaush New Member Join Date: Jun 2017 Posts: 19 Rep Power: 9	Absolutely fine!..we get the results of the tutorial gives for the continious adjoints. Only having trouble with the discrete adjoints. Please do run the discrete_adjoint.py with the setting given in the .cfg file I have posted you would notice a blow up of the adjoint solver..