On the calculation of self-diffusion in vertically agitated granular beds

Document Type

Article

Publication Date

2-22-2008

Abstract

We present self-diffusion calculations derived from discrete element simulations of an idealized granular material under gravity, which is energized through vertical, sinusoidal oscillations of a plane rigid floor. The bed of particles is agitated to a degree so that computed steady-state profiles of granular temperature and solids fraction are consistent with kinetic theory predictions. The average self-diffusivity for the entire assembly, computed both from the velocity autocorrelation function and the mean-square displacement, is found to compare well with an analytic expression taken from kinetic theory. © 2007 Elsevier B.V. All rights reserved.

Identifier

38749108817 (Scopus)

Publication Title

Powder Technology

External Full Text Location

https://doi.org/10.1016/j.powtec.2007.08.003

ISSN

00325910

First Page

228

Last Page

231

Issue

2

Volume

182

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