Forcing and Velocity Correlations in a Vibrated Granular Monolayer
Soft Condensed Matter
2009-11-07 v1 Statistical Mechanics
Abstract
The role of forcing on the dynamics of a vertically shaken granular monolayer is investigated. Using a flat plate, surprising negative velocity correlations are measured. A mechanism for this anti-correlation is proposed with support from both experimental results and molecular dynamics simulations. Using a rough plate, velocity correlations are positive, and the velocity distribution evolves from a gaussian at very low densities to a broader distribution at high densities. These results are interpreted as a balance between stochastic forcing, interparticle collisions, and friction with the plate.
Cite
@article{arxiv.cond-mat/0203312,
title = {Forcing and Velocity Correlations in a Vibrated Granular Monolayer},
author = {Alexis Prevost and David A. Egolf and Jeffrey S. Urbach},
journal= {arXiv preprint arXiv:cond-mat/0203312},
year = {2009}
}
Comments
4 pages, 5 figures