Anomalous transport in conical granular piles

Peter Ahlgren, Mikkel Avlund, Ib Klewe, Jonas Nyvold Pedersen, Álvaro Corral

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Resumen

Experiments on [formula presented]-dimensional piles of elongated particles are performed. Comparison with previous experiments in [formula presented] dimensions shows that the addition of one extra dimension to the dynamics changes completely the avalanche properties, with the appearance of a characteristic avalanche size. Nevertheless, the time which single grains need to cross the whole pile varies smoothly between several orders of magnitude, from a few seconds to more than 100 hours. This behavior is described by a power-law distribution, signaling the existence of scale invariance in the transport process. © 2002 The American Physical Society.

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