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July 29, 2019, 10:58 |
chtMultiRegionFoam in of6 Simple Mode
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#1 |
New Member
Arslan Adeel Ur Rehmann
Join Date: Jun 2018
Posts: 9
Rep Power: 8 |
Hi
Quick Question Can anyone one guide me how to run chtMultiRegionFoam in openFoam 6 in steadyState mode, with Simple algorithm. PS: I have a high velocity so I want to get rid of CFL number. Thanks |
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July 30, 2019, 13:32 |
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#2 |
Senior Member
Peter Baskovich
Join Date: Jul 2014
Posts: 127
Rep Power: 12 |
What you've done is ask a quick question asking for a long response.
chtMultiRegionFoam uses PIMPLE, you don't get to choose which algorithm is used unless you compile yourself. You can use steadyState or localEuler time schemes to obtain steady-state solutions with a transient solver. I'd suggest using localEuler, setting maxCo to 0.5 and setting up residual control. |
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August 1, 2019, 05:25 |
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#3 |
Member
Owais Shabbir
Join Date: May 2019
Posts: 48
Rep Power: 7 |
Hi,
I am also trying to run steady state. Are there any tutorials involving steady-state? I am using OFv6 and I can't find any steady-state tutorials. I have few questions regarding chtMultiRegionFoam Why all the tutorials are using p_rgh as defining the B.C. and then calculating the p? Please Thanks Owais |
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February 24, 2021, 16:56 |
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#4 |
Senior Member
julien
Join Date: Dec 2018
Posts: 107
Rep Power: 7 |
Hello,
What is the reason to have choose the PIMPLE loop to reach steady state? The old chtMultiRegioSimpleFoam outperforms in term of computation time chtMultiRegionFoam for steady cases. With high density solid and Co number close to 1 it takes days to reach steady states.... Maybe someone knows how to set up properly the PIMPLE to have same efficiency than SIMPLE? Julien |
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Tags |
cfl-number, chtmultiregionfoam, openfoam 6, steady state |
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