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

Anthony D. Rosato, Yidan Lan, M. W. Richman

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)228-231
Number of pages4
JournalPowder Technology
Volume182
Issue number2
DOIs
StatePublished - Feb 22 2008

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

Keywords

  • Discrete element simulations
  • Self-diffusion
  • Vertically vibrated granular systems

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