Utility snappyHexMesh reads set-up from system/snappyHexMeshDict and refines background mesh in direction to the surface model. The snappyHexMeshDict dictionary is already set.
Create the mesh running snappyHexMesh utility:
# snappyHexMesh
When finished, check the mesh running checkMesh and view the mesh in paraview:
# checkMesh -latestTime # paraFoam
Created meshes are located in directories named after numbers.
Figure: Kaplan turbine spiral region mesh view. Kaplan water turbine.