Formation of ordered structure and its effect on particle percolation in a vibrated bed

  • A. H. Esfandiary
  • , K. J. Dong
  • , A. B. Yu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Particle percolation in a vibrated bed is investigated by means of discrete element method (DEM). It is found that under some vibrational conditions, percolation becomes unsteady with the percolation velocity fluctuating in a wide range. This happens when dimensionless vibrational velocity, V b(A.(2πf)/gD), is in a certain range, where A is the vibrational amplitude, f is the vibrational frequency, g is the gravitational acceleration and D is the diameter of large particles. The unsteady particle percolation in this range has been analysed on a particle scale, which reveals that V b (in the certain range) can favour the crystallization in the vibrated bed, which significantly decreases the particle percolation velocity. Such crystallizations occasionally happen, leading to the unsteady percolation behaviour.

Original languageEnglish
Title of host publicationPowders and Grains 2013 - Proceedings of the 7th International Conference on Micromechanics of Granular Media
Pages747-750
Number of pages4
DOIs
StatePublished - 2013
Event7th International Conference on Micromechanics of Granular Media: Powders and Grains 2013 - Sydney, NSW, Australia
Duration: 8 Jul 201312 Jul 2013

Publication series

NameAIP Conference Proceedings
Volume1542
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference7th International Conference on Micromechanics of Granular Media: Powders and Grains 2013
Country/TerritoryAustralia
CitySydney, NSW
Period8/07/1312/07/13

Keywords

  • coordination number
  • crystallization
  • packing density
  • particle percolation
  • percolation velocity

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