Validazione di un modello teorico per l'analisi di flussi ad elevato numero di Reynolds attorno ad eliche cavitanti.

This report proposes a hydrodynamic formulation based on the potential theory for incompressible flow to study marine propellers performance in presence of transient sheet cavitation. A validated Boundary Element method (BEM) is combined with an Interactive Boundary Layer (IBL) technique to model the hydrodynamic effects induced by the viscous region, that is here assumed to be attached to the blades surfaces. Numerical results obtained through the three-dimensional (3D) BEM-IBL approach are herein validated against results available in literature; moreover, simplified IBL approaches based on two-dimensional (2D) and "quasi" 3D assumption are proposed as fast and realiable solvers to predict thrust and torque delivered by the propeller.