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.