Internal Avalanches in a Granular Medium
Soft Condensed Matter
2009-10-31 v1
Abstract
Avalanches of grain displacements can be generated by creating local voids within the interior of a granular material at rest in a bin. Modeling such a two-dimensional granular system by a collection of mono-disperse discs, the system on repeated perturbations, shows all signatures of Self-Organized Criticality. During the propagation of avalanches the competition among grains creates arches and in the critical state a distribution of arches of different sizes is obtained. Using a cellular automata model we demonstrate that the existence of arches determines the universal behaviour of the model system.
Cite
@article{arxiv.cond-mat/9808030,
title = {Internal Avalanches in a Granular Medium},
author = {S. S. Manna and D. V. Khakhar},
journal= {arXiv preprint arXiv:cond-mat/9808030},
year = {2009}
}
Comments
4 pages (Revtex), Four ps figures (included)