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http://bura.brunel.ac.uk/handle/2438/316
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. |
URI: | http://bura.brunel.ac.uk/handle/2438/316 |
Appears in Collections: | Mathematical Physics Dept of Mathematics Research Papers Mathematical Sciences |
Files in This Item:
File | Description | Size | Format | |
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Stretched Exponentials.pdf | 118.64 kB | Adobe PDF | View/Open |
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