Particles climbing along a vertically vibrating tube

numerical simulation using the Discrete Element Method (DEM)

Journal article (2017)

Authors

Yupeng Xu National Energy Technology Laboratory
Jordan Musser National Energy Technology Laboratory
Tingwen Li AECOM, National Energy Technology Laboratory
J.T. Padding Intensified Reaction and Separation Systems - Mechanical, Maritime and Materials Engineering
William A. Rogers National Energy Technology Laboratory
Research Group
Intensified Reaction and Separation Systems (Mechanical, Maritime and Materials Engineering) (TU Delft)
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Published Date

2017

Language

English

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Faculty

Mechanical, Maritime and Materials Engineering

Department

Process and Energy

Research Group

Intensified Reaction and Separation Systems

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.

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