Numerical simulation on the process of supercavity development and the planing state of supercavitating vehicle

In order to understand the evolution rule of the inner pressure of ventilated supercavity in its developing process as well as the cavity stability, unsteady three dimensional numerical simulations adopting the two-fluid multiphase flow model and DES (Detached Eddy Simulation Model) turbulence model are carried out. One method based on the relative motion and mesh deformation technology is adopted to investigate the planing state of supercavitating vehicle. The results show the method can predict the developing process of supercavity and its instability characteristic as well as the planing state of supercavitating vehicles. The numerical method can be used to further investigate the planing state and give some significant conclusions.