Using multiple Hicks Henne deformations

jack1980 · November 10, 2015, 20:47

Hi,

For a test-case, I was hoping to do the following:

- Deform an airfoil, using a sum of multiple Hicks Henne deformations (SU2_DEF)
- Compute the direct and adjoint solution (SU2_CFD)
- Get the gradient of the drag with respect to the deformations (SU2_DOT)

So far, this seems to work for a single Hicks Henne deformation, when the .cfg file contains:

DV_KIND= HICKS_HENNE
DV_PARAM= [ 0 , 0.5 ]
DV_VALUE= 0.1

However, would it be possible to combine multiple deformations? I tried:

DV_KIND= HICKS_HENNE
DV_PARAM= [ [0,0.5] , [1,0.5] ]
DV_VALUE= [ 0.1 , 0.1 ]

but this doesn't seem to work.

Thank you very much for your help!

talbring · November 11, 2015, 08:27

Hi jack1980,

the syntax is for multiple design variables is

DV_KIND=HICKS_HENNE, HICKS_HENNE, ...

DV_PARAM = (0.0, 0.05); (0.0, 0.1); ...

DV_VALUE= 0.5, 0.5, ....

jack1980 · November 11, 2015, 18:24

Hi talbring, now it works, thank you very much for your help!

Shreyaskini20 · July 30, 2019, 16:01

Hi all,

I am trying out a similar test-case as Mr. Jouke. But in my case the only change being multiple FFD_CONTROL_POINT instead of HICKS_HENNE.

DV_KIND= FFD_CONTROL_POINT, FFD_CONTROL_POINT, ...
DV_PARAM= (SCB1, 0, 0, 0, 0, 0, 1); (SCB1, 0, 0, 1, 0, 0, 1); ..
DV_VALUE= 0.2, 0.2, 0.2, ..

But the syntax mentioned above doesn't seem to be working for me.

On running SU2_DOT_AD I am getting the the following error:
[localhost:07682] *** Process received signal ***
[localhost:07682] Signal: Segmentation fault (11)
[localhost:07682] Signal code: (128)
[localhost:07682] Failing at address: (nil)
[localhost:07682] [ 0] /lib64/libpthread.so.0(+0xf5d0)[0x7f7b143da5d0]
[localhost:07682] [ 1] SU2_DOT_AD[0x67546e]
[localhost:07682] [ 2] SU2_DOT_AD[0x65128d]
[localhost:07682] [ 3] SU2_DOT_AD[0x671c96]
[localhost:07682] [ 4] SU2_DOT_AD[0x41e10a]
[localhost:07682] [ 5] /lib64/libc.so.6(__libc_start_main+0xf5)[0x7f7b14020495]
[localhost:07682] [ 6] SU2_DOT_AD[0x53bbee]
[localhost:07682] *** End of error message ***

I am using SU2 6.0.0 "Falcon".

Thank you very much for your help!

November 10, 2015, 20:47	Using multiple Hicks Henne deformations	#1
jack1980 Senior Member Jouke de Baar Join Date: Oct 2009 Posts: 127 Rep Power: 17	Hi, For a test-case, I was hoping to do the following: - Deform an airfoil, using a sum of multiple Hicks Henne deformations (SU2_DEF) - Compute the direct and adjoint solution (SU2_CFD) - Get the gradient of the drag with respect to the deformations (SU2_DOT) So far, this seems to work for a single Hicks Henne deformation, when the .cfg file contains: DV_KIND= HICKS_HENNE DV_PARAM= [ 0 , 0.5 ] DV_VALUE= 0.1 However, would it be possible to combine multiple deformations? I tried: DV_KIND= HICKS_HENNE DV_PARAM= [ [0,0.5] , [1,0.5] ] DV_VALUE= [ 0.1 , 0.1 ] but this doesn't seem to work. Thank you very much for your help!

November 11, 2015, 08:27		#2
talbring Super Moderator Tim Albring Join Date: Sep 2015 Posts: 195 Rep Power: 11	Hi jack1980, the syntax is for multiple design variables is DV_KIND=HICKS_HENNE, HICKS_HENNE, ... DV_PARAM = (0.0, 0.05); (0.0, 0.1); ... DV_VALUE= 0.5, 0.5, .... lbfhappy, uyuig0, bornax and 1 others like this.

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November 11, 2015, 18:24		#3
jack1980 Senior Member Jouke de Baar Join Date: Oct 2009 Posts: 127 Rep Power: 17	Hi talbring, now it works, thank you very much for your help!

July 30, 2019, 16:01		#4
Shreyaskini20 New Member Shreyas Kini Join Date: Jun 2019 Posts: 10 Rep Power: 7	Hi all, I am trying out a similar test-case as Mr. Jouke. But in my case the only change being multiple FFD_CONTROL_POINT instead of HICKS_HENNE. DV_KIND= FFD_CONTROL_POINT, FFD_CONTROL_POINT, ... DV_PARAM= (SCB1, 0, 0, 0, 0, 0, 1); (SCB1, 0, 0, 1, 0, 0, 1); .. DV_VALUE= 0.2, 0.2, 0.2, .. But the syntax mentioned above doesn't seem to be working for me. On running SU2_DOT_AD I am getting the the following error: [localhost:07682] * Process received signal * [localhost:07682] Signal: Segmentation fault (11) [localhost:07682] Signal code: (128) [localhost:07682] Failing at address: (nil) [localhost:07682] [ 0] /lib64/libpthread.so.0(+0xf5d0)[0x7f7b143da5d0] [localhost:07682] [ 1] SU2_DOT_AD[0x67546e] [localhost:07682] [ 2] SU2_DOT_AD[0x65128d] [localhost:07682] [ 3] SU2_DOT_AD[0x671c96] [localhost:07682] [ 4] SU2_DOT_AD[0x41e10a] [localhost:07682] [ 5] /lib64/libc.so.6(__libc_start_main+0xf5)[0x7f7b14020495] [localhost:07682] [ 6] SU2_DOT_AD[0x53bbee] [localhost:07682] * End of error message * I am using SU2 6.0.0 "Falcon". Thank you very much for your help!