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Iterative solution techniques for unsteady flow computations using higher order time integration schemes
Author(s) -
Bijl H.,
Carpenter M. H.
Publication year - 2005
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/fld.861
Subject(s) - computation , multigrid method , mathematics , flow (mathematics) , iterative method , computer science , newton's method , unsteady flow , computational fluid dynamics , mathematical optimization , algorithm , partial differential equation , mathematical analysis , mechanics , nonlinear system , geometry , physics , quantum mechanics
In this paper iterative techniques for unsteady flow computations with implicit higher order time integration methods at large time steps are investigated. It is shown that with a minimal coding effort the standard non‐linear multigrid method can be combined with a Newton–Krylov method leading to speed‐ups in the order of 30%. Copyright © 2005 John Wiley & Sons, Ltd.