Segregation of granular binary mixtures by a ratchet mechanism

Details Segregation of granular binary mixtures by a ratchet mechanism Segregation of granular binary mixtures by a ratchet mechanism

2001-02-16

arxiv.org/abs/cond-mat/0102295v1

Phys. Rev. E, vol. 65, 022301 (2002)

Physics

Condensed Matter

Statistical Mechanics

revtex, 4 pages, 4 figures, submitted

Scientific paper

10.1103/PhysRevE.65.022301

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.

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