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incorrect to use nuTilda wall functions for k-epsilon? |
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December 14, 2011, 06:15 |
incorrect to use nut wall functions for k-epsilon?
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New Member
Johan
Join Date: Jul 2011
Posts: 6
Rep Power: 15 |
Hello,
Is nut used only by Spalart Allmaras turbulence model or can it be specified in wall functions for other models as well? I tried to run k-omega SST turbulence model with the following wall functions specified on the walls: omega { type omegaWallFunction; value uniform 1; } nut { type nutSpalartAllmarasWallFunction; value uniform 1; } Specifying k instead gives similar results: omega { type omegaWallFunction; value uniform 1; } k {type kqRWallFunction; value uniform 0.75;} When I use realizable k-epsilon I get very different results depending on wheather k or nut is specified by the wall. Is it correct to use wall functions for nut for k-omega SST, but incorrect for K-epsilon models? Regards Last edited by newToOpenFoam; December 14, 2011 at 09:25. |
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Tags |
k-e model, k-omega sst, nutilda, openfoam, wall functions |
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