Granular Segregation with Anisotropic Particles

ORAL

Abstract

The results from experimental investigations of horizontally vibrated mixtures of anisotropic poppy seeds and long chains of linked spheres will be presented. A critical packing fraction was observed to be required to initiate a transition to segregation. The average size of the resulting patterns was measured and the concentration ratio of the mixtures was varied by changing the number of chains present in the mixtures. A change in the order of the transition, from second to first order with associated hysteresis, was observed as the chain number was reduced. This gave rise to three distinct regions of behaviour: segregated, mixed and a bi-stable state.

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Authors

  • Tim Sykes

  • Tom Mullin

    Manchester Centre for Nonlinear Dynamics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester, M13 9PL, UK, University of Manchester, Manchester Centre for Nonlinear Dynamics, The University of Manchester, School of Physics and Astronomy, Brunswick Street Manchester, UK, Manchester Centre for Nonlinear Dynamics, School of Physics and Astronomy, The University of Manchester, M13 9PL, UK