Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 432755
Title The influence of end walls on the segregation pattern in a horizontal rotating drum
Author(s) Arntz, M.M.H.D.; Otter, W.K. den; Beeftink, H.H.; Boom, R.M.; Briels, W.J.
Source Granular Matter 15 (2013)1. - ISSN 1434-5021 - p. 25 - 38.
DOI https://doi.org/10.1007/s10035-012-0386-4
Department(s) Food Process Engineering
Bioprocess Engineering
VLAG
Publication type Refereed Article in a scientific journal
Publication year 2013
Keyword(s) reversible axial segregation - granular-materials - mixtures - simulation - cylinders - dynamics - motion
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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