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Finite volume computation of the turbulent flow over a hill employing 2D or 3D non‐orthogonal collocated grid systems
Author(s) -
Coelho P. J.,
Pereira J. C. F.
Publication year - 1992
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.1650140404
Subject(s) - turbulence , turbulence modeling , finite volume method , computation , large eddy simulation , mechanics , curvature , flow (mathematics) , grid , cartesian coordinate system , unstructured grid , reynolds averaged navier–stokes equations , navier–stokes equations , computational fluid dynamics , reynolds number , geometry , mathematics , physics , algorithm , compressibility
A general numerical method for the solution of the complete Reynolds‐averaged Navier‐Stokes equations for 2D or 3D flows is described. The method uses non‐orthogonal co‐ordinates, Cartesian velocity components and a pressure‐velocity‐coupling algorithm adequate for non‐staggered grid systems. The capability of the method and the overall performance of the κ–ϵ eddy viscosity model are demonstrated by calculations of 2D and 3D flow over a hill. Solution error estimations based on fine grids, e.g. 320 × 192 control volumes, together with comparisons with standard turbulence model modifications, low‐Reynoldsnumber or streamline curvature effects, have allowed the investigation of model drawbacks in predicting turbulent flows over surface‐mounted hills.