Segregation of granular binary mixtures by a ratchet mechanism

Abstract

We report on a segregation scheme for granular binary mixtures, where the segregation is performed by a ratchet mechanism realized by a vertically shaken asymmetric sawtooth-shaped base in a quasi-two-dimensional box. We have studied this system by computer simulations and found that most binary mixtures can be segregated using an appropriately chosen ratchet, even when the particles in the two components have the same size, and differ only in their normal restitution coefficient or friction coefficient. These results suggest that the components of otherwise non-segregating granular mixtures may be separated using our method.

revtex, 4 pages, 4 figures, submitted

References in corpus (3)

• How to Simulate Billiards and Similar Systems
• One dimensional drift-diffusion between two absorbing boundaries: application to granular segregation
• Stratified horizontal flow in vertically vibrated granular layers

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