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Reply To: Wall Functions in Curved Geometries


Dear Stephan,

I have gone over the implementation of the wall functions in OpenLB and the succesful application of this postprocessor for cylindrical geometries is not very straightforward to me.

Even though there is a function to calculate wall distances with respect to an indicator, there are some sections of the code that seem more suitable to rectangular geometries, like the van driest calculation of Tau_eff (which uses a wall distance of 0.5 if none is provided). Also, some velocity and gradient reconstructions seem to be suitable for rectangular geometries, where the normal of the wall is aligned with the lattice nodes. That is why I asked this particular question.

If I am completely wrong in my analysis, please feel free to tell me so.

Thank you,