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A LOCAL MESH REFINEMENT ALGORITHM APPLIED TO TURBULENT FLOW
Author(s) -
EMVIN PETER,
DAVIDSON LARS
Publication year - 1997
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/(sici)1097-0363(19970315)24:5<519::aid-fld530>3.0.co;2-m
Subject(s) - turbulence , barotropic fluid , venturi effect , discretization , finite volume method , mechanics , cavitation , simple algorithm , flow (mathematics) , reynolds number , computational fluid dynamics , compressibility , computer simulation , mathematics , physics , thermodynamics , geology , mathematical analysis , geomorphology , inlet
This paper presents a local mesh refinement procedure based on a discretization over internal interfaces where the averaging is performed on the coarse side. It is implemented in a multigrid environment but can optionally be used without it. The discretization for the convective terms in the velocity and the temperature equation is the QUICK scheme, while the HYBRID‐UPWIND scheme is used in the turbulence equations. The turbulence model used is a two‐layer k –ϵ model. We have applied this formulation on a backward‐facing step at Re =800 and on a three‐dimensional turbulent ventilated enclosure, where we have resolved a geometrically complex inlet consisting of 84 nozzles. In both cases the concept of local mesh refinements was found to be an efficient and accurate solution strategy. © 1997 by John Wiley & Sons, Ltd.