Utility snappyHexMesh refines background mesh in the direction to the surface model, reading set-up from system/snappyHexMeshDict. Create the mesh running snappyHexMesh utility:
snappyHexMesh
Renumber mesh using renumberMesh utility:
renumberMesh -latestTime
When finished, check the mesh running checkMesh and view the mesh in paraview:
checkMesh paraFoam
Figure: Solid mesh view
The final mesh is located in the directory called by a number. Copy the mesh to the constant/polyMesh directory and remove unnecessary directories: