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Title: Stretched exponentials and power laws in granular avalanching
Authors: Head, DA
Rodgers, GJ
Keywords: Condensed Matter - Statistical Mechanics
Issue Date: 1999
Publisher: Institute of Physics and IOP Publishing Limited
Citation: J. Phys. A: Math. Gen. 32 (1999) 1387–1393
Abstract: We introduce a model for granular avalanching which exhibits both stretched exponential and power law avalanching over its parameter range. Two modes of transport are incorporated, a rolling layer consisting of individual particles and the overdamped, sliding motion of particle clusters. The crossover in behaviour observed in experiments on piles of rice is attributed to a change in the dominant mode of transport. We predict that power law avalanching will be observed whenever surface flow is dominated by clustered motion. Comment: 8 pages, more concise and some points clarified.
Appears in Collections:Mathematical Physics
Dept of Mathematics Research Papers
Mathematical Sciences

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