Comparison of continuum models using the kinetic theory of granular flow with discrete particle models and experiments: extent of particle 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 uidised bed at incipient uidisation 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 eect of dierent 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
Title of host publicationPresent and Future for Fluidization Engineering : Proceedings of Fluidization XI, 9-14 May 2004, Naples, Italy
PagesAMS2-
Publication statusPublished - 2004

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