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Phys. Rev. E 73, 050301(R) (2006) [4 pages]

[sans-serif S] shape of a granular pile in a rotating drum

Nicolas Taberlet,1,2 Patrick Richard,1 and E. John Hinch2
1GMCM, Université Rennes 1, CNRS UMR 6626, Batiment 11A, 35042 Rennes, France
2DAMTP, University of Cambridge, Wilberforce Road, Cambridge, CB3 0WA, United Kingdom
Rapid Received 11 October 2005; revised 28 December 2005; published 16 May 2006

The shape of a granular pile in a rotating drum is investigated. Using discrete elements method (DEM) simulations we show that the "[sans-serif S] shape" obtained for high rotation speed can be accounted for by the friction on the end plates. A theoretical model which accounts for the effect of the end plates is presented and the equation of the shape of the free surface is derived. The model reveals a dimensionless number which quantifies the influence of the end plates on the shape of the pile. Finally, the scaling laws of the system are discussed and numerical results support our conclusions.

©2006 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevE.73.050301
DOI: 10.1103/PhysRevE.73.050301
PACS: 45.70.Ht; 45.70.Qj; 47.27.N-; 83.50.-v
  • 45.70.Ht
    Avalanches (granular systems)
  • 45.70.Qj
    Pattern formation (granular systems)
  • 47.27.N-
    Wall-bounded shear flow turbulence
  • 83.50.-v
    Deformation and flow
  • YEAR: 2006
KEYWORDS: granular flow, rotational flow, flow simulation, friction

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