Self-Organization in a Granular Medium by Internal Avalanches |
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Authors: | SS Manna |
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Institution: | S. N. Bose National Centre for Basic Sciences , Block-JD, Sector-III, Salt Lake, Calcutta , 700 091 , India |
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Abstract: | Internal avalanches of grain displacements can be created inside a granular material kept in a bin in two ways: (i) by removing a randomly selected grain at the bottom of the bin; and (ii) by breaking a stable arch of grains clogging a hole at the bottom of the bin. Repeated generation of such avalanches leads the system to a steady state. It is relevant to ask whether this state is a critical state, as in self-organized criticality (SOC). We review here some recent studies of this problem using cellular automata and hard-disc models. |
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Keywords: | Granular Material Internal Avalanches |
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