Flow dynamics of binary mixtures of non-spherical particles in the rolling-regime rotating drum

The flow characteristics of binary mixtures of cylindrical particles in the rotating drum are numerically studied by extending the DEM model developed for spherical particles to non-spherical ones. The flow patterns of the binary mixtures of cylindrical particles are similar to that of spherical one...

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Main Authors: Yang, Shiliang, Wang, Hua, Wei, Yonggang, Hu, Jianhang, Chew, Jia Wei
Other Authors: School of Chemical and Biomedical Engineering
Format: Article
Language:English
Published: 2021
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Online Access:https://hdl.handle.net/10356/154028
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1540282021-12-14T04:14:14Z Flow dynamics of binary mixtures of non-spherical particles in the rolling-regime rotating drum Yang, Shiliang Wang, Hua Wei, Yonggang Hu, Jianhang Chew, Jia Wei School of Chemical and Biomedical Engineering Nanyang Environment and Water Research Institute Singapore Membrane Technology Centre Engineering::Chemical engineering Discrete Element Method Rotating Drum The flow characteristics of binary mixtures of cylindrical particles in the rotating drum are numerically studied by extending the DEM model developed for spherical particles to non-spherical ones. The flow patterns of the binary mixtures of cylindrical particles are similar to that of spherical ones. Enlarging the length ratio obviously increases the dynamic angle of repose throughout the drum length, which gives rise to greater total kinetic energy and corresponding fluctuation magnitude. The length difference of the constituents leads to radial segregation, with small and large cylindrical particles in the radial core and periphery, respectively. Moreover, radial segregation decreases and increases the mass of large and small particles, respectively, in the active region. Also, enlarging the length ratio clearly increases the streamwise velocity in the active region. Different from the translational velocity, the rotating velocity along the axial direction is of the same scale as the transversal ones. The authors thank the financial support from National Natural Science Foundation of China-Yunnan Joint Fund (Grant No. U1602272), National Natural Science Foundation of China (Grant No. 51966007), and also the 2nd Intra-CREATE Seed Collaboration Grant (NRF2017-ITS002-013). 2021-12-14T04:14:14Z 2021-12-14T04:14:14Z 2020 Journal Article Yang, S., Wang, H., Wei, Y., Hu, J. & Chew, J. W. (2020). Flow dynamics of binary mixtures of non-spherical particles in the rolling-regime rotating drum. Powder Technology, 361, 930-942. https://dx.doi.org/10.1016/j.powtec.2019.10.110 0032-5910 https://hdl.handle.net/10356/154028 10.1016/j.powtec.2019.10.110 2-s2.0-85076022549 361 930 942 en NRF2017-ITS002-013 Powder Technology © 2019 Elsevier B.V. All rights reserved.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Chemical engineering
Discrete Element Method
Rotating Drum
spellingShingle Engineering::Chemical engineering
Discrete Element Method
Rotating Drum
Yang, Shiliang
Wang, Hua
Wei, Yonggang
Hu, Jianhang
Chew, Jia Wei
Flow dynamics of binary mixtures of non-spherical particles in the rolling-regime rotating drum
description The flow characteristics of binary mixtures of cylindrical particles in the rotating drum are numerically studied by extending the DEM model developed for spherical particles to non-spherical ones. The flow patterns of the binary mixtures of cylindrical particles are similar to that of spherical ones. Enlarging the length ratio obviously increases the dynamic angle of repose throughout the drum length, which gives rise to greater total kinetic energy and corresponding fluctuation magnitude. The length difference of the constituents leads to radial segregation, with small and large cylindrical particles in the radial core and periphery, respectively. Moreover, radial segregation decreases and increases the mass of large and small particles, respectively, in the active region. Also, enlarging the length ratio clearly increases the streamwise velocity in the active region. Different from the translational velocity, the rotating velocity along the axial direction is of the same scale as the transversal ones.
author2 School of Chemical and Biomedical Engineering
author_facet School of Chemical and Biomedical Engineering
Yang, Shiliang
Wang, Hua
Wei, Yonggang
Hu, Jianhang
Chew, Jia Wei
format Article
author Yang, Shiliang
Wang, Hua
Wei, Yonggang
Hu, Jianhang
Chew, Jia Wei
author_sort Yang, Shiliang
title Flow dynamics of binary mixtures of non-spherical particles in the rolling-regime rotating drum
title_short Flow dynamics of binary mixtures of non-spherical particles in the rolling-regime rotating drum
title_full Flow dynamics of binary mixtures of non-spherical particles in the rolling-regime rotating drum
title_fullStr Flow dynamics of binary mixtures of non-spherical particles in the rolling-regime rotating drum
title_full_unstemmed Flow dynamics of binary mixtures of non-spherical particles in the rolling-regime rotating drum
title_sort flow dynamics of binary mixtures of non-spherical particles in the rolling-regime rotating drum
publishDate 2021
url https://hdl.handle.net/10356/154028
_version_ 1720447077601771520