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EULERIAN–LAGRANGIAN COMPUTATIONS ON PHASE DISTRIBUTION OF TWO‐PHASE BUBBLY FLOWS
Author(s) -
Kuo T. C.,
Pan C.,
Chieng C. C.,
Yang A. 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(19970330)24:6<579::aid-fld510>3.0.co;2-e
Subject(s) - eulerian path , mechanics , two phase flow , rotational symmetry , two fluid model , computation , classical mechanics , momentum (technical analysis) , flow (mathematics) , computational fluid dynamics , physics , mathematics , lagrangian , mathematical analysis , finance , algorithm , economics
A comprehensively theoretical model is developed and numerically solved to investigate the phase distribution phenomena in a two‐dimensional, axisymmetric, developing, two‐phase bubbly flow. The Eulerian approach treats the fluid phase as a continuum and solved Eulerian conservation equations for the liquid phase. The Lagrangian bubbles are tracked by solving the equation of motion for the gas phase. The interphase momentum changes are included in the equations. The numerical model successfully predicts detailed flow velocity profiles for both liquid and gas phases. The development of the wall‐peaking phenomenon of the void fraction and velocity profiles is also characterized for the developing flow. For 42 experiments in which the mean void fraction is less than 20 per cent, numerical calculations demonstrate that the predictions agree well with Liu's experimental data. © 1997 by John Wiley & Sons, Ltd.