[hcl734]

Hi all,

I am simulating a backward facing step with heat transfer at the lower wall after the step using Nusselt-number as benchmark.
With two relatively coarse meshes I obtain results close to experimental data.

Using a third mesh which is heavily refined to the walls I get bad results overestimating Nusselt-number especially in the region of reattaching flow.

I think it could be a problem of the near-wall-treatment in kOmegaSST-model I am using, since for Mesh 3 yPlus seriously drops below 1.
BUT I thought using nutLowReWallFunction & kLowReWallFunction (+omegaWallFunction + alphatJayatillekeWallFunction)
OF would automatically switch to LowRe-mode when the mesh get's to fine at the wall?
Is that not implemented in OF?