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NUMERICAL PREDICTION OF TWO‐PHASE FLOW IN BUBBLE COLUMNS
Author(s) -
BOISSON N.,
MALIN M. R.
Publication year - 1996
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(19961230)23:12<1289::aid-fld473>3.0.co;2-q
Subject(s) - turbulence , bubble , mechanics , discretization , turbulence modeling , drag , two phase flow , physics , finite volume method , classical mechanics , flow (mathematics) , mathematics , mathematical analysis
Abstract A numerical model is described for the prediction of turbulent continuum equations for two‐phase gas–liquid flows in bubble columns. The mathematical formulation is based on the solution of each phase. The two‐phase model incorporates interfacial models of momentum transfer to account for the effects of virtual mass, lift, drag and pressure discontinuities at the gas–liquid interface. Turbulence is represented by means of a two‐equation k –ϵ model modified to account for bubble‐induced turbulence production. The numerical discretization is based on a staggered finite‐volume approach, and the coupled equations are solved in a segregated manner using the IPSA method. The model is implemented generally in the multipurpose PHOENICS computer code, although the present appllications are restricted to two‐dimensional flows. The model is applied to simulate two bubble column geometries and the predictions are compared with the measured circulation patterns and void fraction distributions.