Filling a silo with a mixture of grains: Friction-induced segregation

Details Filling a silo with a mixture of grains: Friction-induced segregation Filling a silo with a mixture of grains: Friction-induced segregation

1998-09-25

arxiv.org/abs/cond-mat/9809353v2

Physics

Condensed Matter

Disordered Systems and Neural Networks

10 pages, 5 figures, to be appear in Europhys. Lett

Scientific paper

10.1209/epl/i1998-00483-y

We study the filling process of a two-dimensional silo with inelastic particles by simulation of a granular media lattice gas (GMLG) model. We calculate the surface shape and flow profiles for a monodisperse system and we introduce a novel generalization of the GMLG model for a binary mixture of particles of different friction properties where, for the first time, we measure the segregation process on the surface. The results are in good agreement with a recent theory, and we explain the observed small deviations by the nonuniform velocity profile.

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