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I can't add turbulence model in multiPhaseEulerFoam |
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#1 |
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saeed sangchooly
Join Date: Feb 2022
Posts: 17
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hi everyone
I'm trying to simulate a 3phase case with multiphaseEulerFoam solver. water, oil and air. with interfaceCompression for (air and water) and (air and oil). I can't add komegaSSTSato or any other turbulence model. in the first time step when it comes to solving transport equation for turbulence parameters (k,omega,..) the solver give me the Floating point exception error. I've tried using the results of a laminar case as initial condition for my turbulence case. I've tried many hexahedral meshes with really good quality up to 1m cells. I've tried many turbulence parameters estimations for initial and boundary condition for each phase. I really dont know what I'm missing here. it would be great if anyone can give me a clue . |
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#2 | |
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saeed sangchooly
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Quote:
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#3 |
Senior Member
Join Date: Dec 2019
Location: Cologne, Germany
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can you tell which OF version you use?
can you use the banana-trick and show us the ouput? should look like this: --> FOAM FATAL ERROR: Unknown RASModel type banana Valid RASModel types: 2 ( kEpsilon kOmegaSST ) here you can see that multiphaseEulerFoam for my custom solver can only use 2 tubulence models. is komegaSSTSato a valid option in your case? |
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#4 | |
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saeed sangchooly
Join Date: Feb 2022
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Quote:
currently Im trying to use komegaSSTSato and this is the output of banana-trick: --> FOAM FATAL ERROR: [4] Unknown RASModel type kOmegaSSSato Valid RASModel types: 8 ( LaheyKEpsilon continuousGasKEpsilon kEpsilon kOmegaSST kOmegaSSTSato kineticTheory mixtureKEpsilon phasePressure ) |
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#5 |
Senior Member
Join Date: Dec 2019
Location: Cologne, Germany
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ok, so kOmegaSSTSato is a valid option.
the floating point exception error ist most likely the result of a division by zero. when you initialize your turbulence values such as k and omega, do not set the values in the domain to zero. for an initial test run do not use wall functions for turbulence properties, use zero gradient instead and see if it is running. try these suggestions out and let me know if it works. |
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#6 |
New Member
saeed sangchooly
Join Date: Feb 2022
Posts: 17
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Im sorry it took me a while to answer.
I've tried it (zerogradient) , it didn't work. I've no idea... |
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Tags |
komegasstsato, multiphaseeulerfaom, openfoam, openfoam 1806, turbulence model |
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