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The influence of end walls on the segregation pattern in a horizontal rotating drum

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Abstract

The influence of end walls on segregation of bidisperse granular beds in a short rotating horizontal drum is studied by a discrete element method. Whereas non-closed periodically continued drums segregate radially, all simulations of drums with end walls resulted in axial segregation with two bands at low friction between the particles and the end-wall, and three bands at high friction. Various simulations show irregular transitions between two approximately equally stable states, with rapid oscillations preceding the conversions. The formation of two axial bands decreases the energy dissipation by the bed, whereas neither radial segregation nor axial segregation into three bands reduced the power absorption at constant angular velocity. Roughening up the end-walls also increased the rate of axial segregation.

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Authors and Affiliations

  1. Food Process Engineering, Wageningen University, P. O. Box 8129, 6700 EV , Wageningen, The Netherlands

    M. M. H. D. Arntz & R. M. Boom

  2. Computational BioPhysics, MESA+ Institute for Nanotechnology and Faculty of Science and Technology, University of Twente, P. O. Box 217, 7500 AE , Enschede, The Netherlands

    W. K. den Otter & W. J. Briels

  3. Multi Scale Mechanics, MESA+ Institute for Nanotechnology and Faculty of Engineering Technology, University of Twente, P. O. Box 217, 7500 AE , Enschede, The Netherlands

    W. K. den Otter

  4. Bioprocess Engineering, Wageningen University, P. O. Box 8129, 6700 EV , Wageningen, The Netherlands

    H. H. Beeftink

Authors
  1. M. M. H. D. Arntz
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  2. W. K. den Otter
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  3. H. H. Beeftink
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  4. R. M. Boom
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  5. W. J. Briels
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Correspondence to H. H. Beeftink.

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Arntz, M.M.H.D., den Otter, W.K., Beeftink, H.H. et al. The influence of end walls on the segregation pattern in a horizontal rotating drum. Granular Matter 15, 25–38 (2013). https://doi.org/10.1007/s10035-012-0386-4

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  • DOI: https://doi.org/10.1007/s10035-012-0386-4

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