FULLY COUPLED, 6-DOF TO URANS, MODELING OF CAVITATING FLOWS AROUND A SUPERCAVITATING VEHICLE

A preconditioned, homogenous, multiphase, unsteady Reynolds Averaged Navier-Stokes (URANS) scheme is dynamically coupled to a six-degree-of-freedom (6DOF) rigid body motion model. Details of the numerical and physical modeling associated with the coupled URANS-6DOF code are presented. Results are presented for an application to a notional supercavitating vehicle. Among other important observations, the vehicle dynamics solution is seen to approach a quasi-steady limit cycle behavior. This compares favorably with integrated results of a reduced order dynamics model.