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Agglomerated multigrid on hybrid unstructured meshes for compressible flow
Author(s) -
Sørensen K. A.,
Hassan O.,
Morgan K.,
Weatherill N. P.
Publication year - 2002
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.316
Subject(s) - multigrid method , inviscid flow , polygon mesh , discretization , finite volume method , compressible flow , compressibility , flow (mathematics) , transient (computer programming) , mathematics , turbulence , computer science , computational fluid dynamics , mechanics , geometry , partial differential equation , mathematical analysis , physics , operating system
Abstract A review of the applicability of the agglomerated multigrid solution acceleration approach for the simulation of compressible flows is presented. The flow descriptions are wide ranging, spanning from inviscid to turbulent and from steady state to transient. The spatial discretization is performed by a node‐centred finite volume scheme, with explicit addition of fourth‐order artificial dissipation. The improved performance resulting from the introduction of unstructured hybrid meshes is illustrated. For time‐dependent flows involving moving geometries, a second order geometrically conservative scheme is applied, with multigrid accelerated implicit timestepping. Copyright © 2002 John Wiley & Sons, Ltd.