Understanding the dynamics of segregation bands of simulated granular material in a rotating drum

Abstract

Axial segregation of a binary mixture of grains in a rotating drum is studied using Molecular Dynamics (MD) simulations. A force scheme leading to a constant restitution coefficient is used and shows that axial segregation is possible between two species of grains made of identical material differing by size. Oscillatory motion of bands is investigated and the influence of the frictional properties elucidated. The mechanism of bands merging is explained using direct imaging of individual grains.

References in corpus (2)

• Traveling Granular Segregation Patterns in a Long Drum Mixer
• Simulational studies of axial granular segregation in a rotating cylinder

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• Origin of granular axial segregation bands in a rotating tumbler: An interface-mixing driven Rayleigh-Taylor instability
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