Problem
The k–epsilon wall-function mask currently includes only cells that directly own a physical wall facet.
On an unstructured simplicial mesh, some cells may touch the wall only through a wall vertex. Excluding these cells can produce an incomplete near-wall layer and inconsistent wall-function treatment around mesh vertices.
This affects the computation of wall quantities such as friction velocity, wall viscosity, and $y^+$.
Proposed solution
- Extend the near-wall mask to cells sharing a wall vertex.
- Preserve a separate mask containing only physical wall-facet owners.
- Associate vertex-touching cells with their wall-facet owner cells.
Problem
The k–epsilon wall-function mask currently includes only cells that directly own a physical wall facet.
On an unstructured simplicial mesh, some cells may touch the wall only through a wall vertex. Excluding these cells can produce an incomplete near-wall layer and inconsistent wall-function treatment around mesh vertices.
This affects the computation of wall quantities such as friction velocity, wall viscosity, and$y^+$ .
Proposed solution