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February 22, 2023, 18:11 |
su2 would not start iterating
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#1 |
New Member
Zida
Join Date: Feb 2023
Location: Bristol
Posts: 6
Rep Power: 3 |
Hi,
I'm trying to run a 3D incompressible eulers simulation using SU2 (Version 7.5.0 "Blackbird"), the case is basically an umbrella canopy embedded in a simple box mesh, subjected to 8m/s freestream. The solver simply won't start iterating, it does not print any error message but I think the problem could be: "WARNING: SURFACE_PRESSURE_DROP can only be computed for at least 2 surfaces (outlet, inlet, ...)" Any help would be appreciated. |
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February 23, 2023, 00:52 |
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#2 |
Senior Member
Pedro Gomes
Join Date: Dec 2017
Posts: 466
Rep Power: 13 |
That is not the issue. Can you upload your config? Or reproduce the problem with a smaller mesh? (check your system monitor maybe you are running out of memory)
Are you running with MPI? On linux or windows? etc. etc. more detail please |
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February 23, 2023, 05:52 |
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#3 | |
New Member
Zida
Join Date: Feb 2023
Location: Bristol
Posts: 6
Rep Power: 3 |
Quote:
Here's my config and .geo file, (.su2 mesh too large to upload) The config file I'm using is basically the one in the incompressible hydrofoil tutorial, left it mostly unchanged because I just wanted to test things. (This is my first CFD experience) And I made my mesh with Gmsh. Thanks. |
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February 23, 2023, 08:59 |
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#4 |
Senior Member
bigfoot
Join Date: Dec 2011
Location: Netherlands
Posts: 529
Rep Power: 17 |
Do the SU2 tutorial cases run for you?
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February 25, 2023, 20:21 |
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#5 |
Senior Member
Pedro Gomes
Join Date: Dec 2017
Posts: 466
Rep Power: 13 |
I tried it now, opened the geo in gmsh, clicked 3D Mesh and exported as SU2 (do not select export all elements).
The solver started fine, it uses about 3.2GB of RAM so that's probably not the issue. I don't know much about running SU2 on windows but check if you are not on a system folder (or protected some other way). If you open task manager is SU2 using any CPU while it is stuck? |
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February 27, 2023, 05:53 |
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#6 |
New Member
Zida
Join Date: Feb 2023
Location: Bristol
Posts: 6
Rep Power: 3 |
Yes they all work, tutorials and test cases
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February 27, 2023, 06:07 |
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#7 |
New Member
Zida
Join Date: Feb 2023
Location: Bristol
Posts: 6
Rep Power: 3 |
Still can't get the solver to start.
It's definitely not an memory issue, I've tried smaller meshes, same problem. It doesn't seem su2 uses any CPU while it's stuck :/ All my executables are in C:\CFD\bin\SU2, and I created sub directories in CFD for all my runs |
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February 27, 2023, 06:28 |
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#8 | |
New Member
Zida
Join Date: Feb 2023
Location: Bristol
Posts: 6
Rep Power: 3 |
Quote:
Any idea where I screwed up? Many thanks for all your help. |
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February 27, 2023, 06:32 |
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#9 | |
New Member
Zida
Join Date: Feb 2023
Location: Bristol
Posts: 6
Rep Power: 3 |
Quote:
"segmentation fault: 11" at the end, So this could be a security related problem the whole time? |
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