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

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Beetstra, R. and Hoef, M.A. van der and Kuipers, J.A.M. (2007) Numerical study of segregation using a new drag force correlation for polydisperse systems derived from lattice-Boltzmann simulations. Chemical Engineering Science, 62 (1-2). pp. 246-255. ISSN 0009-2509

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Abstract: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.
Item Type:Article
Copyright:Elsevier Ltd
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Link to this item:http://purl.utwente.nl/publications/68592
Official URL:http://dx.doi.org/10.1016/j.ces.2006.08.054
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