Preconditioning Techniques for Nonsymmetric Linear Systems in the Computation of Incompressible Flows

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Manguoglu M., Sameh A. H., Saied F., Tezduyar T. E., Sathe S.

JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME, vol.76, no.2, 2009 (SCI-Expanded)

• Publication Type: Article / Article
• Volume: 76 Issue: 2
• Publication Date: 2009
• Doi Number: 10.1115/1.3059576
• Journal Name: JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME
• Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
• Middle East Technical University Affiliated: No

Abstract

In this paper we present effective preconditioning techniques for solving the nonsymmetric systems that arise from the discretization of the Navier-Stokes equations. These linear systems are solved using either Krylov subspace methods or the Richardson scheme. We demonstrate the effectiveness of our techniques in handling time-accurate as well as steady-state solutions. We also compare our solvers with those published previously. [DOI: 10.1115/1.3059576]