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Error in "void CSolver::SetResidual_RMS(CGeometry*, CConfig*)":

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Old   August 6, 2020, 14:29
Default Error in "void CSolver::SetResidual_RMS(CGeometry*, CConfig*)":
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Hi,

I am running Incompressible RANS NACA0012 Tutorial.(https://su2code.github.io/tutorials/...ulent_NACA0012) Keeping all parameters exactly same except changing the Mesh file which is in cgns format(imported from ICEM CFD- The Mesh is QuadMesh with 84000 Elms). I found that Solution is diverging within 30 iterations. But if i use default .su2 file. Solution is running smoothly.
Could anyone help me in solving the issue. Is it related to Mesh file.?

I am attaching images of SU2 Error and picture of Mesh (Mesh file size is pretty big)
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File Type: png error.PNG (58.4 KB, 74 views)
File Type: png Mesh.PNG (65.2 KB, 53 views)
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Old   August 8, 2020, 04:40
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Can you post the entire output of SU2, not just the residuals part.
The mesh quality statistics can indicate if there are conversion issues.
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Old   August 8, 2020, 06:24
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Thanks for reply. I am hereby attaching a file.. which is having complete output of SU2.
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File Type: jpg su2_error_1.jpg (77.0 KB, 129 views)
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Old   August 8, 2020, 08:33
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That is almost impossible to read... Nevertheless, the maximum aspect ratio is very large (300000+) which can cause problems for the linear solvers, try reducing CFL a little maybe to 10-15 and if that does not work, reduce the aspect ratio of your cells.
You can also try 1st order (MUSCL_FLOW = NO) if the convergence is good that way you can go back to 2nd order but using a limiter.
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