Velocity correlations in dense granular flows
Other Condensed Matter
2009-11-11 v1
Abstract
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.
Cite
@article{arxiv.cond-mat/0502670,
title = {Velocity correlations in dense granular flows},
author = {Olivier Pouliquen},
journal= {arXiv preprint arXiv:cond-mat/0502670},
year = {2009}
}