Turbomachinery CFD solver for incompressible fluid flows is called blueSolver. blueSolver was gradually developed from simpleFoam. This solver behaves as a regular OpenFOAM solver, it is compatible with all the applications and libraries as the simpleFoam solver. Solver is modified to be more robust, it works with multiple regions, it can use MRF method, limits for quantities can be specified and many other changes have been implemented.