Time-accurate prediction of three-dimensional incompressibile flows with free-surfaces

摘要

This paper describes a method for accurately predicting unsteady, three-dimensional, viscous flows with free-surfaces. The special feature of this study is a time-accurate and divergence-free procedure for the computation fo the free-surface motion. The mehtod attempts to achieve second order temporal resolution of the free-surface motion through an iterative procedure. The formulation uses a surface-fitting approach which forces the free-surface to coincide with one boundary of the computational domain and soves the three-dimensional incompressible Navier-Stokes equations in primiktive variable form within the liquid region. Three-dimensional computations in different geometries have bene performed and the computed results have bene checked for transient accuracy by comparing with available experimental dat.a