Blending Dual Time Stepping and Newton-Krylov Methods for Unsteady Flows

Blending Dual Time Stepping and Newton-Krylov Methods for Unsteady Flows

We explore the idea of using nonlinear schemes as preconditioners in Newton‐Krylov schemes for unsteady flow computations. Analysis shows that left preconditioning changes the Newton scheme in a non equivalent way, leading to a stall in Newton convergence, whereas right preconditioning leads to a so...

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Veröffentlicht in:PAMM 2009-12, Vol.9 (1), p.597-598
Hauptverfasser: Birken, Philipp, Jameson, Antony
Format: Artikel
Sprache:eng
Schlagworte:
Krylov subspace methods,Multigrid,Newton,Preconditioning,unsteady Euler equations
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Zusammenfassung:We explore the idea of using nonlinear schemes as preconditioners in Newton‐Krylov schemes for unsteady flow computations. Analysis shows that left preconditioning changes the Newton scheme in a non equivalent way, leading to a stall in Newton convergence, whereas right preconditioning leads to a sound method. (© 2009 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)
ISSN:1617-7061
1617-7061
DOI:10.1002/pamm.200910270