PERFORMANCE AND ACCURACY OF A MODIFIED FULL MULTIGRID ALGORITHM FOR FLUID FLOW AND HEAT TRANSFER

Abstract

This article aims to assess the performance of a new, fill multigrid algorithm in which there is no restriction procedure for variables except far residuals. It simplifies the multigrid strategy and the structure of program. This algorithm is used in combination with the SIMPLE algorithm to solve fluid flows with heat transfer, using collocated grids and higher-order schemes for convective fluxes. Accurate solutions are obtained for lid'driotn flow, natural convection in a cavity, and natural convection in an eccentric annulus.