Calculs de poche de cavitation sur des profils de machines hydrauliques

Computation of sheet cavitation on foils of hydraulic machines

Institut de machines hydrauliques et de mécanique des fluides EPFL, Lausanne, Suisse

Abstract

Two mains aspects are taken into account in the prediction of the development of leading edge cavities on hydraulic machines profiles. The first one is concerned with the viscosity effects, as well as the momentum transfert influence on the development process of these cavities. The second aspect is related to the three-dimensional behaviour of the flow. A comparison between measurements and the two-dimensional results obtained with various calculation codes is presented. Different approaches in order to extend the calculation to the three dimensional cavities are discussed