* wall treatment

You can combine the turbulent flow interfaces with different types of wall treatments, according to the following list:

 1. Wall functions

     + Robust and applicable for *coarse* meshes

     + Limited accuracy

     + Smooth and rough walls

     + Supported by k-ε, Realizable k-ε, and k-ω

 2. Low-Reynolds-number treatment

    + Resolves the flow all the way down to the walls

    + Accurate

    + Supported by all turbulence models except the standard k-ε and Realizable k-ε

 4. Automatic wall treatment

      + Switches between low-Re treatment and wall functions

      + Accurate according to local mesh resolution

      + Inherits the robustness provided by wall functions

      + Default for all turbulence models except standard k-ε and Realizable k-ε