Numerical Study of a Multigrid Method with Four Smoothing Methods for the Incompressible Navier-Stokes Equations in General Coordinates

摘要

The performance of a linear multigrid method using four smoothing methods, called SCGS, CLGS, SILU and CILU is investigated for the incompressible Navier-Stokes equations in general coordinates, in association with Galerkin coarse grid approximation. Robustness and efficiency are measured and compared by application to test problems. The numerical results show that CILU is the most robust, SILU the least, with CLGS and SCGS in between. CLGS is the best in efficiency, SCGS and CILU follow, and SILU is the worst. (Copyright (c) 1993 by Faculty of Technical Mathematics and Informatics, Delft, The Netherlands.)