Finite element computation of a turbulent flow over a two‐dimensional backward‐facing step | Zendy

Autret A. | Zendy; Grandotto M. | Zendy; Dekeyser I. | Zendy

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Finite element computation of a turbulent flow over a two‐dimensional backward‐facing step

Author(s) -

Autret A.,

Grandotto M.,

Dekeyser I.

Publication year - 1988

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.1650080903

Subject(s) - turbulence , computation , finite element method , mechanics , galerkin method , flow (mathematics) , computational fluid dynamics , mathematics , inlet , k epsilon turbulence model , physics , geometry , classical mechanics , engineering , algorithm , mechanical engineering , thermodynamics

This paper is devoted to the computation of turbulent flows by a Galerkin finite element method. Effects of turbulence on the mean field are taken into account by means of a k ‐ϵ turbulence model. The wall region is treated through wall laws and, more specifically, Reichardt's law. An inlet profile for ϵ is proposed as a numerical treatment for physically meaningless values of k and ϵ. Results obtained for a recirculating flow in a two‐dimensional channel with a sudden expansion in width are presented and compared with experimental values.

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