MODIFIED COLLOCATED SIMPLEC ALGORITHM APPLIED TO BUOYANCY-AFFECTED TURBULENT FLOW USING A MULTIGRID SOLUTION PROCEDURE

Abstract

Some modifications to the collocated SIMPLEC method are presented. These modifications significantly stabilize the iteration process in buoyant flow. The modifications are made to the Rhie and Chow interpolation, the SIMPLEC iteration, and the pressure correction equation. A muitigrid method is used to speed up the iteration process, and the QUICK scheme is used to approximate the convective terms. To account for turbulence we use a two-layer k-ε model.