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Fast pressure calculation for 2D and 3D time dependent incompressible flow
Author(s) -
van Kan J.,
Vuik C.,
Wesseling P.
Publication year - 2000
Publication title -
numerical linear algebra with applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.02
H-Index - 53
eISSN - 1099-1506
pISSN - 1070-5325
DOI - 10.1002/1099-1506(200009)7:6<429::aid-nla204>3.0.co;2-8
Subject(s) - multigrid method , preconditioner , mathematics , compressibility , block (permutation group theory) , partial differential equation , elliptic partial differential equation , incompressible flow , flow (mathematics) , mathematical analysis , algorithm , geometry , mechanics , iterative method , physics
A black box multigrid preconditioner is described for second order elliptic partial differential equations, to be used in pressure calculations in a pressure correction method. The number of cells in a block is not restricted as for standard multigrid, but completely arbitrary. The method can be used in a multiblock environment and fine tuning for eache hits is described. A comparison is made with wall clock times of conventional preconditioners. Copyright © 2000 John Wiley & Sons, Ltd.