[AlphaSierra]

Hi,

I'm new to SU2 and I'm trying to study shock reflections. I wanted to run grid adaptation on my mesh to improve my results. But I do not completely understand the options given in the template file. After initially running the solution for enough time, I used GRAD_FLOW but no changes were made in the adapted mesh and when I used SUPERSONIC_SHOCK, the adaptation was done at the inlet instead of near the shocks. Can someone please help me out here.

[AlexF]

Hi Anjay,

I had run into a similar problem not long ago.

Referencing:
Inviscid Supersonic Wedge Mesh Adaptation Issue

To use the mesh adaptation codes, you must specify the following in the configuration file:

% Write binary restart files (YES, NO)
WRT_BINARY_RESTART= NO
%
% Read binary restart files (YES, NO)
READ_BINARY_RESTART= NO

This is because SU2’s mesh adaptation code is only compatible with ASCII files (at least when I was using it).

If you are running “python mesh_adaptation.py -f file.cfg“, the adapted mesh will be output after the solution has converged; otherwise, you must run “SU2_MSH file.cfg” with the restart file output from SU2_CFD. Also note that you can see additional options for the python script by using the “python mesh_adaptation.py -h” command.

I never used the SUPERSONIC_SHOCK option; however, the GRAD_FLOW option worked well for me. I am also fairly new to CFD so I cannot explain all of the options available, sorry. I think the GRAD_FLOW option adapts based on the density gradient, which was appropriate for my application.


Hope this helps,
Alex

[AlphaSierra]

Hey Alex,

Thanks for the information. The link did help. I'm still trying to set up mesh_adaptation.py. But SU2_MSH does the job for me now. Thanks a lot.

Anjay