Comparison of continuum models using the kinetic theory of granular flow with discrete particle models and experiments : extent of mixing induced by bubbles

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Abstract

The bubble formation and extent of particle mixing induced by a single bubble injected in a mono-disperse fluidised bed at incipient fluidisation conditions has been studied with a Two-Fluid continuum Model (TFM) using the Kinetic Theory of Granular Flow (KTGF) and com- pared with experiments and simulation results obtained from a Discrete Particle Model (DPM). The effect of different gas-particle drag models and frictional viscosity models on the bubble behaviour and extent of particle mixing has been assessed. To describe the extent of particle mixing well, a frictional viscosity model needs to be included, however, the currently available frictional viscosity models need further improvement.
Original languageEnglish
Number of pages8
Publication statusPublished - 2003
EventComputational Fluid Dynamics in Chemical Reaction Engineering III (CFD in CRE III), May 25-30, 2003, Davos, Switzerland - Davos, Switzerland
Duration: 25 May 200330 May 2003

Conference

ConferenceComputational Fluid Dynamics in Chemical Reaction Engineering III (CFD in CRE III), May 25-30, 2003, Davos, Switzerland
Abbreviated titleCFD in CRE III
Country/TerritorySwitzerland
CityDavos
Period25/05/0330/05/03

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