Velocity correlations in dense granular flows

Details Velocity correlations in dense granular flows Velocity correlations in dense granular flows

2005-02-28

arxiv.org/abs/cond-mat/0502670v1

Physical Review Letters 93 (2004) 248001

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

10.1103/PhysRevLett.93.248001

Velocity fluctuations of grains flowing down a rough inclined plane are experimentally studied. The grains at the free surface exhibit fluctuating motions, which are correlated over few grains diameters. The characteristic correlation length is shown to depend on the inclination of the plane and not on the thickness of the flowing layer. This result strongly supports the idea that dense granular flows are controlled by a characteristic length larger than the particle diameter.

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