The objective is to develop a numerical model to simulate with ANSYS the cavitation development inside a Venturi type test section under different hydrodynamic conditions. For that, a series of experimental tests carried out in a cavitation tunnel will be taken as a reference. The dimensions of cavitation and the pressures measured at different sections of the Venturi will be compared between the steady state simulations and the experiments. If time permits, transient conditions can also be investigated.