On The Performance Of Smoothers In

Coupled Multigrid Methods For The

Solution Of Incompressible  Navier-Stokes

Equations On Parallel Computers

V. John

doi:10.2495/AFM000171

On The Performance Of Smoothers In Coupled Multigrid Methods For The Solution Of Incompressible Navier-Stokes Equations On Parallel Computers

Price

Free (open access)

Transaction

WIT Transactions on Engineering Sciences

Volume

Pages

Published

2000

Size

1,007 kb

Paper DOI

10.2495/AFM000171

WIT Press

Author(s)

V. John

Abstract

We present a comparison of Vanka and Braess-Sarazin smoothers in coupled mul- tigrid methods for the solution of incompressible Navier-Stokes equations describ- ing two-dimensional flows past obstacles. The numerical tests are based on the Crank-Nicolson time discretization and the nonconforming Pi/Po-finite element discretization in space on unstructured grids. All computations were performed on 32 processors of a MIMD parallel computer. The Vanka smoother turned out to be in general more efficient in this framework. 1 Introduction The efficient numerical solution of incompressible Navier-Stokes equations plays an important role in the numerical simulation of many complex problems in fluid mechanics. Benchmark computations (Schafer

Keywords

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Code

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