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A simple numerical technique for turbulent flows with free surfaces
Author(s) -
Lemos C. M.
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.1650150202
Subject(s) - turbulence , laminar flow , closure (psychology) , compressibility , mechanics , simple algorithm , simple (philosophy) , free surface , flow (mathematics) , computational fluid dynamics , reynolds number , incompressible flow , classical mechanics , reynolds stress , physics , mathematics , philosophy , epistemology , economics , market economy , thermodynamics
A simple technique is presented for the numerical solution of two‐dimensional time‐dependent flows, either laminar or turbulent, involving multiple free surfaces of arbitrary configuration. The governing equations are the Reynolds equations for incompressible fluids with Boussinesq closure, the k ‐ and ϵ‐equations and an additional equation describing the fluid configuration. This technique can potentially describe the propagation, deformation and overturning of pre‐breaking waves and the mean flow, surface configuration and turbulence field after breaking. The properties of the method are illustrated by several calculational examples. The main parts of the algorithm are optimized for vector processing in a form suitable for installation in supercomputer facilities.