Numerical study of segregation using a new drag force correlation for polydisperse systems derived from lattice-Boltzmann simulations

R. Beetstra, Martin Anton van der Hoef, J.A.M. Kuipers

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    Discrete particle simulations of a segregating system are performed using various drag relations and boundary conditions, and compared to experiments. The boundary conditions on the walls are found to have a large influence on the segregation behaviour of the fluidised bed, where no-slip conditions result in unrealistic flow patterns. A polydispersity factor, which was recently derived on the basis of lattice-Boltzmann (LBM) simulations, is found to have a major effect on the segregation velocity and the final degree of segregation. The best agreement with experimental results is obtained with drag relations that were recently proposed based on LBM-simulations in combination with the aforementioned polydispersity factor.
    Original languageUndefined
    Pages (from-to)246-255
    JournalChemical engineering science
    Issue number1-2
    Publication statusPublished - 2007


    • IR-68592
    • METIS-245270

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