Wave Influences on Viscous Flow around a Ship in Steady Yaw Motion

Abstract

This paper concerns an investigation of wave influences on viscous flow around a ship in steady yaw motion, which is based on detailed analysis of numerical solutions of Reynolds-averaged Navier-Stokes (RaNS) equations. The present numerical method solves the unsteady RaNS and continuity equations for mean-velocity and pressure and wave fields with exact nonlinear kinematic and approximate dynamic free-surface boundary conditions. In the following, an overview is given of the present numerical approach, and results are presented for the Series 60 CB=0.6 at yaw angle 10°for with/without-wave cases, including wherever possible comparison with experimental data. Then discussions are focused on identification of salient feature of wave-included effects on the mean-velocity and pressure fields, body surface pressure and frictional streamlines, and hydrodynamic forces acting on the hull. Lastly, some specific aspects of flow for wave breaking and wave-induced vortices are described.