Comparison of Two-Fluid and Discrete Particle Modeling of Dense Gas-Particle Flows in Gas-Fluidized Beds

Authors

  • Dr. Junwu Wang,

    1. State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Science, P. O. Box 353, Beijing 100190, China
    2. Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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  • Dr. Martin A. van der Hoef,

    Corresponding author
    1. Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
    2. University of Twente, Department of Science & Technology, P.O. Box 217, 7500 AE Enschede, The Netherlands
    • Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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  • Prof. J. A. M. Kuipers

    1. Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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Abstract

Both two-fluid models embedding the kinetic theory of granular flow for particulate phase stress (TFM) and discrete particle models (DPM) are widely used for the numerical simulation of gas fluidization. In this study, a detailed comparison between results obtained from both TFM and DPM is reported, including axial and radial solid concentration profiles, solids circulation patterns, pressure drop and its standard deviation and granular temperature. It was shown that good agreement can be obtained even in cases of low restitution coefficient, which suggests the possible applicability of kinetic theory of granular flow beyond its nominal range of validity and clearly indicates that the continuum treatment of the solids phase in TFM provides a good approximation of its discrete nature.

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