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 400155
Title Repeated segregation and energy dissipation in an axially segregated granular bed
Author(s) Arntz, M.M.H.D.; Otter, W.K. den; Beeftink, H.H.; Boom, R.M.; Briels, W.J.
Source Europhysics Letters 92 (2010)5. - ISSN 0295-5075 - p. 54004 - 54004.
Department(s) Food Process Engineering
Bioprocess Engineering
Publication type Refereed Article in a scientific journal
Publication year 2010
Keyword(s) long drum mixer - horizontal rotating cylinder - simulations - dynamics - mixtures - patterns - model - core
Abstract Discrete element simulations were used to study the segregation behaviour in a bed of bidisperse granules in a rotating drum. In the final state the large particles ended up in the upper part of the bed near the vertical walls. In order to arrive at this state, the system went through two cycles of structural changes, on top of which fast oscillations were observed between an axially segregated and a somewhat more mixed state. These oscillations were sustained by different angles of repose near the vertical walls and in the middle of the bed. Concomitantly with the structural changes, the system's energy dissipation went through two cycles after which it settled in the state requiring the least work of all traversed states, suggesting that the granular bed strives for minimal dissipation.
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