Abstract
This paper describes a computational method for incompressible multiphase flows, consisting of immiscible two fluids with different density. A robust unified procedure proposed in this paper enables us to deal with the two-fluid system as a single-phase flow with a density distribution. In this method, consideration was given to the treatment of the pressure Poisson equation as well as the numerical accuracy of the convection terms in the Navier-Stokes equations, and to the advection method of the normalized density. This method was applied to the stratified two-fluid flows arising in a cavity. As a result, it was shown that the flow patterns and the profiles of the interface between two fluids are reasonably predicted with the computational method.
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