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October 3, 2017, 10:31 |
Trouble with kOmegaSSTLM
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#1 |
New Member
Daniel Ferreira
Join Date: Jul 2016
Posts: 4
Rep Power: 10 |
Hello, guys.
I'm currently working with a basic case, an airfoil with a separation-induced transition. To solve the laminar separation bubble, I'm using the gamma Retheta transition model. With the fully turbulent k Omega SST, I do get good results, but with the same mesh and the same boundary conditions with transition model, my simulation do not work. The problem clearly is in th gamma Retheta, but I couldn't find out the answer for my problem reading the log. I'm attaching the controlDict, fvSolution, fvSchemes and the log of my simulation. I hope someone can help me. Thank you, guys. log.simpleFoam.tar.gz solver.tar.gz Last edited by Duduzao123; October 3, 2017 at 16:29. |
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April 11, 2019, 10:47 |
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#2 | |
Senior Member
Alejandro
Join Date: Jan 2014
Location: Argentina
Posts: 128
Rep Power: 12 |
Quote:
Try reducing the relaxationFactors 0.3 for P and 0.7 for the rest. Also: div(phi,U) bounded Gauss upwind; laplacianSchemes Gauss linear limited 0.333; snGradSchemes limited 0.333; |
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August 13, 2022, 07:18 |
Maybe mesh related
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#3 |
Member
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I also had the same problem.
After hours I found out that the kOmegaSSTLM seems to be more sensitive to the mesh. After changing the trailing edge from edgy to round the kOmegaSSTLM model works fine, see attached pictures. Best regards Michael Last edited by Wowbagger; August 13, 2022 at 07:19. Reason: spelling mistake |
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March 5, 2024, 06:09 |
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#4 |
New Member
Pedro
Join Date: Aug 2018
Posts: 2
Rep Power: 0 |
I'm beginner on OpenFoam and I would like to know if you can help me with kOmegaSSTLM setup for a VAWT. I don't know what exactly I have to set up on ReTheta.
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March 5, 2024, 16:52 |
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#5 | |
Member
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Quote:
Hi hmbpedro. I followed the instructions given (as example) in: https://www.openfoam.com/documentati...ga-sst-lm.html I also had a look to this video which helped me much in understanding: https://www.youtube.com/watch?v=5htknS9uVEk Hope this helps. Best regards Michael |
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Tags |
gamma rethetat, komegasstlm |
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