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Periodic flow and heat transfer using unstructured meshes
Author(s) -
Murthy J. Y.,
Mathur S.
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(19970930)25:6<659::aid-fld580>3.0.co;2-y
Subject(s) - laminar flow , heat transfer , turbulence , mechanics , polygon mesh , finite volume method , heat exchanger , periodic boundary conditions , flow (mathematics) , computation , simple algorithm , mathematics , boundary value problem , physics , thermodynamics , mathematical analysis , geometry , algorithm
A numerical scheme has been developed for computing fluid flow and heat transfer in periodically repeating geometries. Unstructured solution‐adaptive meshes are used in a cell‐centred finite volume formulation. The SIMPLE algorithm is used for pressure‒velocity coupling. For periodic flows the static pressure is decomposed into a periodic component and one that varies linearly in the streamwise direction. The latter is computed from the imposition of overall mass balance at the periodic boundary. A subiteration between the periodic pressure correction equation and the correction to the linear component is used. For heat transfer a formulation using the physical rather than the scaled temperature is employed. The scheme is applied to both laminar and turbulent computations of periodic flow and heat transfer in a variety of heat exchanger geometries; comparison with published computations and experimental data is found to be satisfactory. © 1997 John Wiley & Sons, Ltd.