Dynamics of granular flows down rotating semi-cylindrical chutes

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

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    3 Citations (Scopus)
    82 Downloads (Pure)

    Abstract

    The behavior of spherical particles flowing down a three-dimensional chute, inclined at fixed angle, is commonly simulated by a discrete element method (DEM). DEM is nowadays a standard tool for numerical studies of e.g. gas-solid fluidized beds. We have modified DEM for the simulation of rotating granular flows. In view of future extensions aimed at, for example, segregation studies of (rotating) bi- and polydisperse granular flows or mixtures of two kinds of granular particles with different densities, several validation steps are required. In a first step we compare DEM simulations with experiments of monodisperse spherical glass particles flowing through a rotating semi-cylindrical chute inclined at a fixed angle and constant flow rate. Different measurement techniques such as Particle Image Velocimetry and Particle Tracking Velocimetry are used to measure the averaged surface velocity of the particles and the bed height in the chute. We observe that the prevailing flow patterns depend strongly on the rotation rate of the chute. The streamwise and the spanwise particle velocities are influenced by the centrifugal and Coriolis forces, where with increasing rotation rate the particles are moving increasingly sideways. We find that the details of the particle feeding pattern are important only for the particle flow near the entrance of the chute, whereas after a relatively short distance the particle flow depends only on other factors such as the mass rate, inclination angle and rotation rate. Our DEM model predictions agree well with the experimental measurements for bed height and surface velocity.
    Original languageEnglish
    Title of host publicationNew Paradigm of Particle Science and Technology
    Subtitle of host publicationProceedings of the 7th World Congress on Particle Technology
    EditorsYongshen Han, Wei Ge, Junwu Wang, Limin Wang, Xinhua Liu
    Place of PublicationLonden
    PublisherElsevier
    Pages731-740
    Number of pages10
    DOIs
    Publication statusPublished - 2015
    Event7th World Congress on Particle Technology, WCPT 2014: New Paradigm of Particle Science and Technology - Beijing, China
    Duration: 19 May 201422 May 2014
    Conference number: 7

    Publication series

    NameProcedia Engineering
    PublisherElsevier
    Volume102
    ISSN (Print)1877-7058

    Conference

    Conference7th World Congress on Particle Technology, WCPT 2014
    Abbreviated titleWCPT7
    Country/TerritoryChina
    CityBeijing
    Period19/05/1422/05/14

    Keywords

    • PIV
    • PTV
    • DEM
    • Granular flow
    • Rotating chute

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