Complex dynamics of three interacting spheres in a rotating drum
نویسندگان
چکیده
منابع مشابه
Simulations for dynamics of granular mixtures in a rotating drum
We present a simple model and carry out simulations to investigate the dynamics of mixtures of granular material within a rotating drum. On the basis of the commonly held belief (supported by considerable experimental evidence) that segregation is due to motion of particles on the active layer, the bulk playing little or no role, we introduce a 2d lattice gas model which takes into account the ...
متن کاملSimulated three-component granular segregation in a rotating drum.
Discrete particle simulations are used to model segregation in granular mixtures of three different particle species in a horizontal rotating drum. Axial band formation is observed, with medium-size particles tending to be located between alternating bands of big and small particles. Partial radial segregation also appears; it precedes the axial segregation and is characterized by an inner core...
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– 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 differing by size only. Oscillatory motion of bands is invistigated and the influence of the frictional properties elucidated. The...
متن کاملDiffusion of a granular pulse in a rotating drum.
The diffusion of a pulse of small grains in an horizontal rotating drum is studied through discrete elements methods simulations. We present a theoretical analysis of the diffusion process in a one-dimensional confined space in order to elucidate the effect of the confining end-plate of the drum. We then show that the diffusion is neither subdiffusive nor superdiffusive but normal. This is demo...
متن کاملS shape of a granular pile in a rotating drum.
The shape of a granular pile in a rotating drum is investigated. Using discrete elements method (DEM) simulations we show that the "S shape" obtained for high rotation speed can be accounted for by the friction on the end plates. A theoretical model which accounts for the effect of the end plates is presented and the equation of the shape of the free surface is derived. The model reveals a dime...
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ژورنال
عنوان ژورنال: Physics of Fluids
سال: 2010
ISSN: 1070-6631,1089-7666
DOI: 10.1063/1.3353612