For creating new mesh with snappyHexMesh it is recommended to create new OpenFOAM test case just with system and constant directory.
The input .STL files are located in constant/triSurface and can be directly viewed in paraview: # paraview
Three .STL files are presented, namely: drafttube.stl, interface-draft-rot.stl, outflow.stl.
Interface between draft tube and rotor part (interface-draft-rot.stl) is the same as for rotor region (see Section , page ).
The initial idea is to create following mesh boundaries: draft tube walls, outlet and interface. Their number and names can change during the creation process.