COMPUTATION OF HIGH-SPEED TURBULENT FLOW ABOUT A SHIP MODEL WITH A TRANSOM STERN

摘要

The steady flow about a surface ship model with a transom stern moving at high speed is analyzed. Viscous effects are included through the use of a numerical solution of the Reynolds-averaged Navier-Stokes (RANS) equations subject to nonlinear free-surface boundary conditions. The k - ∈ turbulence model is employed. The structured grid maintains its hull boundary-layer resolution into the wake. This assures the capturing of the strong viscous/free-surface interaction of the boundary-layer wake with the stern wave field. This interaction is demonstrated by comparison with results of inviscid computations. Comparisons with measured data are also presented. The results represent a step forward in a long history of progress on the challenging problem of the computation of flows about transom sterns.