Numerical Analysis of the Vortex Cavitation Around the Revolution Body with Cone-Shaped Headforms

The objective of the paper is to simulate the vortex cavitation around the revolution body with cone-shaped headforms.The numerical results show that when water flow around revolution body,the separate vortices formed at the geometry inflexion point.The separate vortices was simplified into two-dimension elliptic vortices in this paper,and the streamline and pressure distribution in the vortices were analyzed base on boundary layer and vortex flow theory,the relationship between the separation vortex and the cavitation inception was obtained.The flow structure and the geometrical characteristics of the cavitations were analyzed by numerical simulation when the cavity developed.