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Towards the numerical simulation of the horizontal slug front
Author(s) -
Yacoub N.,
Maron D. Moalem,
Naot D.
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.1650140202
Subject(s) - mechanics , vortex , turbulence , dissipation , eddy , jet (fluid) , turbulence kinetic energy , streamlines, streaklines, and pathlines , flow (mathematics) , discontinuity (linguistics) , computer simulation , classical mechanics , physics , geology , geometry , mathematics , mathematical analysis , thermodynamics
Steps towards the numerical simulation of the flow behind the slug front in horizontal slug flow performed with a streamfunction‐vorticity representation of the mean flow and an energy dissipation model for the turbulence are discussed. The flow field consists of two vortices, one saddle point and four stagnation regions. Attention is focused on the following boundary conditions: moving wall jet, moving wall, free jet velocity discontinuity and vertical liquid‐gas open surface. A dissipation flux boundary condition is suggested to simulate the interaction of the turbulent eddies with the open surface. A method to assess the necessity to use a transport model equation for the dissipation rather than a geometric specification of a length is suggested. Three different ways to characterize the mixing zone length are proposed.