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

  • A. H. Esfandiary
  • , K. J. Dong
  • , A. B. Yu
  • University of New South Wales

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

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.

源语言英语
主期刊名Powders and Grains 2013 - Proceedings of the 7th International Conference on Micromechanics of Granular Media
747-750
页数4
DOI
出版状态已出版 - 2013
活动7th International Conference on Micromechanics of Granular Media: Powders and Grains 2013 - Sydney, NSW, 澳大利亚
期限: 8 7月 201312 7月 2013

出版系列

姓名AIP Conference Proceedings
1542
ISSN(印刷版)0094-243X
ISSN(电子版)1551-7616

会议

会议7th International Conference on Micromechanics of Granular Media: Powders and Grains 2013
国家/地区澳大利亚
Sydney, NSW
时期8/07/1312/07/13

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