Numerical and experimental investigations of the unsteady cavitating flow in a vortex pump

In order to develop an understanding of the flow conditions in Vortex Pumps, numerical investigations (commercial URANSE-CFD-Solver ANSYS CFX, Volume-of-Fluid Rayleigh-Plesset cavitation model, eight impeller revolutions) and experimental investigations (High-Speed Exposures of the cavitation clouds through acrylic glass window) have been carried out. A further objective was to investigate the URANSE-CFD method using the mentioned cavitation model regarding numerical stability and accuracy.