Default Turbomachinery CFD solver is called TCFDSolver. It was gradually developed during the time from rhoSimpleFoam solver. This solver behaves as a standard OpenFOAM solver, it is compatible with all application and libraries as the rhoSimpleFoam solver. Solver is modified to be more robust, it works with multiple regions, it can use MRF method, limits for variables can be specified and many other changes have been done.