Simulation Study of the Effect of Wall Roughness on the Dynamics of Granular Flows in Rotating Semicylindrical Chutes

Sushil S. Shirsath, J.T. Padding, J.A.M. Kuipers, H.J.H. Clercx

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    Abstract

    A discrete element model (DEM) is used to investigate the behavior of spherical particles flowing down a semicylindrical rotating chute. The DEM simulations are validated by comparing with particle tracking velocimetry results of spherical glass particles flowing through a smooth semicylindrical chute at different rotation rates of the chute. The DEM model predictions agree well with experimental results of surface velocity and particle bed height evolution. The validated DEM model is used to investigate the influence of chute roughness on the flow behavior of monodisperse granular particles in rotating chutes. To emulate different base roughnesses, a rough base is constructed out of a square close packing of fixed spherical particles with a diameter equal to, smaller, or larger than the flowing particles. Finally, the DEM model is used to study segregation in a binary density mixture for different degrees of roughness of the chute.
    Original languageUndefined
    Pages (from-to)2117-2135
    Number of pages19
    JournalAIChE journal
    Volume61
    Issue number7
    DOIs
    Publication statusPublished - Jul 2015

    Keywords

    • rotation
    • EWI-26091
    • Particle tracking velocimetry
    • base roughness
    • METIS-312645
    • IR-96227
    • Granular flow
    • Segregation
    • discrete element model

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