Particles climbing along a vertically vibrating tube: numerical simulation using the Discrete Element Method (DEM)

Yupeng Xu, Jordan Musser, Tingwen Li, Johan T. Padding, William A. Rogers

Research output: Contribution to journalArticleAcademicpeer-review

15 Citations (Scopus)

Abstract

It has been reported experimentally that granular particles can climb along a vertically vibrating tube partially inserted inside a granular silo. In this paper, we use the Discrete Element Method (DEM) available in the Multiphase Flow with Interphase eXchanges (MFIX) code to investigate this phenomenon. By tracking the movement of individual particles, the climbing mechanism was illustrated and analyzed. The numerical results show that a sufficiently high vibration strength is needed to form a low solids volume fraction region inside the lower end of the vibrating tube, a dense region in the middle of the tube, and to bring the particles outside from the top layers down to fill in the void. The results also show that particle compaction in the middle section of the tube is the main cause of the climbing. Consequently, varying parameters which influence the compacted region, such as the restitution coefficient, change the climbing height.

Original languageEnglish
Pages (from-to)304-312
Number of pages9
JournalPowder Technology
Volume320
DOIs
Publication statusPublished - 1 Oct 2017

Keywords

  • Discrete Element Method
  • Granular pump
  • Particle climbing
  • Vibrating tube

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