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

G.A. Bokkers, M. van Sint Annaland, J.A.M. Kuipers

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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 compared 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 - 25 May 2003
    EventComputational Fluid Dynamics in Chemical Reaction Engineering III, 2003 - Kongresszentrum, Davos, Switzerland
    Duration: 25 May 200330 May 2003
    Conference number: 3

    Conference

    ConferenceComputational Fluid Dynamics in Chemical Reaction Engineering III, 2003
    CountrySwitzerland
    CityDavos
    Period25/05/0330/05/03

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