Numerical study of a multigrid method with four smoothing methods for the incompressible Navier-Stokes equations in general coordinates
Abstract
The performance of a linear multigrid method using four smoothing methods, called SCGS (Symmetrical Coupled Gauss Seidel), CLGS (Collective Line GS), SILU (Scalar ILU), and CILU (Collective ILU) 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.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- 1993
- Bibcode:
- 1993STIN...9331547Z
- Keywords:
-
- Incompressible Flow;
- Multigrid Methods;
- Navier-Stokes Equation;
- Smoothing;
- Computational Fluid Dynamics;
- Galerkin Method;
- Linear Equations;
- Robustness (Mathematics);
- Fluid Mechanics and Heat Transfer