[Small Eddy]

Hello,
im setting up the boundary conditions for nut in a simpleFoam, k-epsilon simulation. my teacher gave me the hint to use nutUWallFunction for walls. looking in the code i can see nut is calculated by a wall function.

nutw[facei] = nuw[facei]*(yPlus[facei]*kappa_/log(E_*yPlus[facei]) - 1.0)

does that mean openfoam calculate nut not only at y=0 with this formula but for a special amount of cells?

Thanks

[jherb]

Not looking at the original source code I guess facei is a variable indexing the face areas of the wall. So no, only directly for the wall the values are calculated by the wall function and the cell (volume) values are derived from the face values.