High-order ILU preconditioners for CFD problems

Andrew Chapman, Yousef Saad, Larry Wigton

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

This paper tests a number of incomplete lower-upper (ILU)-type preconditioners for solving indefinite linear systems, which arise from complex applications such as computational fluid dynamics (CFD). Both point and block preconditioners are considered. The paper focuses on ILU factorization that can be computed with high accuracy by allowing liberal amounts of fill-in. A number of strategies for enhancing the stability of the factorizations are examined. Copyright (C) 2000 John Wiley and Sons, Ltd.

Original languageEnglish (US)
Pages (from-to)767-788
Number of pages22
JournalInternational Journal for Numerical Methods in Fluids
Volume33
Issue number6
DOIs
StatePublished - Jul 2000

Keywords

  • Block LU
  • Dropping strategies
  • Incomplete LU
  • Krylov sub-space methods
  • Preconditioning

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