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Article Dans Une Revue Journal of Statistical Mechanics: Theory and Experiment Année : 2008

Experimental study of a creeping granular flow at very low velocity

Jérôme Crassous
Jean-François Métayer
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  • PersonId : 860453
Patrick Richard
Claude Laroche
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  • PersonId : 828451

Résumé

We report an experimental study of the surface flow and the creeping flow of glass spheres on a heap. We characterize the dynamics of the flow with particle tracking velocimetry and dynamic light scattering measurements. We observe a creeping flow with a dynamics which slows down exponentially with the depth. The characteristic distance for the decay is one bead diameter. A striking observation is that the exponential decay for the mean velocity holds over more than six orders of magnitude.

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hal-00674465 , version 1 (27-02-2012)

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Jérôme Crassous, Jean-François Métayer, Patrick Richard, Claude Laroche. Experimental study of a creeping granular flow at very low velocity. Journal of Statistical Mechanics: Theory and Experiment, 2008, pp.03009. ⟨10.1088/1742-5468/2008/03/P03009⟩. ⟨hal-00674465⟩
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