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omegaWallFunctionFvPatchScalarField in OpenFoam 3.0.0 |
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April 3, 2016, 15:04 |
omegaWallFunctionFvPatchScalarField in OpenFoam 3.0.0
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Hi guys, I'm using a k omega SST with a mesh with y+<1 and so that is able to resolve the viscous sub-layer. I've founded a discussion http://www.cfd-online.com/Forums/ope...tml#post438465 in which is reported a modification of omegawallfunction's:
scalar omegaVis = 6.0*nuw[faceI]/(beta1_*sqr(y[faceI])); scalar omegaLog = sqrt(k[faceCellI])/(Cmu25*kappa_*y[faceI]); omega[faceCellI] = sqrt(sqr(omegaVis) + sqr(omegaLog)); we have found cases for which this causes a sudden change in the viscosity near the wall if the mesh is sufficiently fine and that just using the logarithmic part give more continuous behavior: omega[faceCellI] = omegaLog; So, according you, i have to modify the code like above, to allow to model k omega SST to work correctly in viscous sub-layer? |
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