Files Preparation - Rotor Region
For creating new mesh with snappyHexMesh it is recommended to create new OpenFOAM test case just with system and constant directory. Go to your user directory and create directories for rotor region mesh. It is recommended to copy a similar tutorial case and modify just the different parts of the case.
The initial idea is to create following mesh boundaries: shroud, hub, blade and two interfaces. Their number and names may change during the creation process.