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k-omega SST constants different bettwen openfoam and fluent?

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Old   August 26, 2021, 13:04
Default k-omega SST constants different bettwen openfoam and fluent?
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Nguyen Trong Hiep
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hello guys,
i found a problem with k-omega SST tuburlence model.
Here is k-omegaSST frome openFoam and nasa web page:

https://www.openfoam.com/documentati...omega-sst.html
https://turbmodels.larc.nasa.gov/sst.html
And here is fluent constants:


i am confusing with it. Can anyone help me explain it?
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Old   September 5, 2021, 10:05
Default k-omega SST constants different bettwen openfoam and fluent?
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Stephan
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Hi,
the major visible discrepancy is in the alpha vs. sigma coefficient values. But if you look at the code, sigma = 1/alpha.
The remaining differences are round-off errors.
-Hope this helps?
Stephan
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Old   September 5, 2021, 23:24
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Nguyen Trong Hiep
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Quote:
Originally Posted by Steve80 View Post
Hi,
the major visible discrepancy is in the alpha vs. sigma coefficient values. But if you look at the code, sigma = 1/alpha.
The remaining differences are round-off errors.
-Hope this helps?
Stephan
Thank you very much
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