Boundary-Condition for k-epsilon model
 

Hi,
I have a newbie question. I set up a simulation for flow through a pipe using a k-epsilon turbulence model. My wall boundary condition for U is a no-slip:

wall:
U: fixed Value (uniform (0 0 0))

I am using wall functions for k, epsilon and nut and I get a velocity profile that goes down to 0 at the walls.

When I do the same simulation with Comsol Multiphysics using a k-epsilon model and wall functions, I get a velocity profile that is non-zero at the walls. This is explained because wall-functions model the flow only to the beginning of the buffer-layer.

My question now is: what is the right way to do it in OpenFoam? Shouldn't the velocity at the walls also be non-zero when using wall functions?

Thanks in Advance!