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Publication: Simulations of collision times in gravity driven granular flow

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Title Simulations of collision times in gravity driven granular flow
Authors/Editors* J. J. Drozd, C. Denniston
Where published* Europhysics Letters
How published* Journal
Year* 2006
Volume 76
Number 3
Pages 360-366
Publisher EPL
Keywords Classical statistical mechanics: Kinetic theory, Classical Mechanics of discrete systems: Granular flow; mixing; segregation, Rheology: Granular solids.
Link http://www.iop.org/EJ/abstract/0295-5075/76/3/360/
Abstract
We use simulations to investigate collision time distributions as one approaches the static limit of steady-state flow of dry granular matter. The collision times fall in a power law distribution with an exponent dictated by whether the grains are ordered or disordered. Remarkably, the exponents have almost no dependence on dimension. We are also able to resolve a disagreement between simulation and experiments on the exponent of the collision time power law distribution.
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