Internal Avalanches in a Granular Medium

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.

4 pages (Revtex), Four ps figures (included)

References in corpus (1)

• A quasi-random spanning tree model for the early river network

Cited by in corpus (8)

• Identification of arches in 2D granular packings
• Nonmonotonic reversible branch in four model granular beds subjected to vertical vibration
• Arching in tapped deposits of hard disks
• Effect of packing fraction on the jamming of granular flow through small apertures
• Pentagon deposits unpack under gentle tapping
• Jamming transition in a two-dimensional open granular pile with rolling resistance
• Tuning the Correlation Decay in the Resistance Fluctuations of Multi-Species Networks
• Density distribution of particles upon jamming after an avalanche in a 2D silo