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Title: Numerical study on the axial segregation dynamics of a binary-size granular mixture in a three-dimensional rotating drum
Authors: Yang, Shiliang
Sun, Yuhao
Zhang, Liangqi
Chew, Jia Wei
Keywords: Musical Instruments
Discrete Element Method
DRNTU::Engineering::Chemical engineering
Issue Date: 2017
Source: Yang, S., Sun, Y., Zhang, L., & Chew, J. W. (2017). Numerical study on the axial segregation dynamics of a binary-size granular mixture in a three-dimensional rotating drum. Physics of Fluids, 29(10), 103302-. doi:10.1063/1.5004663
Series/Report no.: Physics of Fluids
Abstract: Granular materials are ubiquitous in our daily life and inherent in multitudinous industrial processes. Differences in the granular properties such as size and density inevitably induce segregation. By means of the discrete element method, a binary-size mixture in a three-dimensional rotating drum is numerically simulated to explore the segregation dynamics of the granular material along the axial direction. Snapshots of the distribution of the two particle types in the rotating drum are presented with respect to time to illustrate the spatial evolution of the size-induced segregation structure. The space-time plots of various axial characteristics indicate that (i) radial segregation does not affect the axial distribution of total mass and mass fraction, but axial segregation leads to the formation of axial bands; (ii) greater non-dimensionalized collision forces for both the large and small particles develop where the large particles dominate; and (iii) axial segregation gives rise to the variation of the gyration radii of both particle types along the drum length. In addition, axial flow of both particle types in both directions indicates the dynamic axial exchanges, and the effect of the end walls on the axial flow direction is limited to less than 25% of the drum length from the end walls.
ISSN: 1070-6631
DOI: 10.1063/1.5004663
Rights: © 2017 The Author(s) (Published by AIP). This paper was published in Physics of Fluids and is made available as an electronic reprint (preprint) with permission of The Author(s) (Published by AIP). The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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