Size-induced axial band structure and directional flow of a ternary-size granular material in a 3-D horizontal rotating drum
Differences in the material property of the granular material induce segregation which inevitably influences both natural and industrial processes. To understand the dynamical segregation behavior, the band structure, and also the spatial redistribution of particles induced by the size differences o...
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| Outros Autores: | |
| Formato: | Journal Article |
| Idioma: | English |
| Publicado em: |
2019
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| Acesso em linha: | https://hdl.handle.net/10356/106307 http://hdl.handle.net/10220/48920 |
| _version_ | 1826128400232742912 |
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| author | Yang, Shiliang Sun, Yuhao Ma, Honghe Chew, Jia Wei |
| author2 | School of Chemical and Biomedical Engineering |
| author_facet | School of Chemical and Biomedical Engineering Yang, Shiliang Sun, Yuhao Ma, Honghe Chew, Jia Wei |
| author_sort | Yang, Shiliang |
| collection | NTU |
| description | Differences in the material property of the granular material induce segregation which inevitably influences both natural and industrial processes. To understand the dynamical segregation behavior, the band structure, and also the spatial redistribution of particles induced by the size differences of the particles, a ternary-size granular mixture in a three-dimensional rotating drum operating in the rolling flow regime is numerically simulated using the discrete element method. The results demonstrate that (i) the axial bands of the medium particles are spatially sandwiched in between those of the large and small ones; (ii) the total mass in the active and passive regions is a global parameter independent of segregation; (iii) nearly one-third of all the particles are in the active region, with the small particles having the highest mass fraction; (iv) the axial bands initially appear near the end wall, then become wider and purer in the particular species with time as more axial bands form toward the axial center; and (v) the medium particle type exhibits segregation later and has the narrowest axial bandwidth and least purity in the bands. Compared to the binary-size system, the presence of the medium particle type slightly increases the total mass in the active region, leads to larger mass fractions of the small and large particle types in the active region, and enhances the axial segregation in the system. The results obtained in the current work provide valuable insights regarding size segregation, and band structure and formation in the rotating drum with polydisperse particles. |
| first_indexed | 2024-10-01T07:24:22Z |
| format | Journal Article |
| id | ntu-10356/106307 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:24:22Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-10356/1063072020-09-26T22:02:13Z Size-induced axial band structure and directional flow of a ternary-size granular material in a 3-D horizontal rotating drum Yang, Shiliang Sun, Yuhao Ma, Honghe Chew, Jia Wei School of Chemical and Biomedical Engineering Nanyang Environment and Water Research Institute Singapore Membrane Technology Centre Musical Instruments Fluid Flows DRNTU::Engineering::Bioengineering Differences in the material property of the granular material induce segregation which inevitably influences both natural and industrial processes. To understand the dynamical segregation behavior, the band structure, and also the spatial redistribution of particles induced by the size differences of the particles, a ternary-size granular mixture in a three-dimensional rotating drum operating in the rolling flow regime is numerically simulated using the discrete element method. The results demonstrate that (i) the axial bands of the medium particles are spatially sandwiched in between those of the large and small ones; (ii) the total mass in the active and passive regions is a global parameter independent of segregation; (iii) nearly one-third of all the particles are in the active region, with the small particles having the highest mass fraction; (iv) the axial bands initially appear near the end wall, then become wider and purer in the particular species with time as more axial bands form toward the axial center; and (v) the medium particle type exhibits segregation later and has the narrowest axial bandwidth and least purity in the bands. Compared to the binary-size system, the presence of the medium particle type slightly increases the total mass in the active region, leads to larger mass fractions of the small and large particle types in the active region, and enhances the axial segregation in the system. The results obtained in the current work provide valuable insights regarding size segregation, and band structure and formation in the rotating drum with polydisperse particles. NRF (Natl Research Foundation, S’pore) Published version 2019-06-24T03:54:00Z 2019-12-06T22:08:44Z 2019-06-24T03:54:00Z 2019-12-06T22:08:44Z 2018 Journal Article Yang, S., Sun, Y., Ma, H., & Chew, J. W. (2018). Size-induced axial band structure and directional flow of a ternary-size granular material in a 3-D horizontal rotating drum. Physics of Fluids, 30(5), 053302-. doi:10.1063/1.5022861 1070-6631 https://hdl.handle.net/10356/106307 http://hdl.handle.net/10220/48920 10.1063/1.5022861 en Physics of Fluids © 2018 The Author(s). All rights reserved. This paper was published by AIP Publishing in Physics of Fluids and is made available with permission of The Author(s). 14 p. application/pdf |
| spellingShingle | Musical Instruments Fluid Flows DRNTU::Engineering::Bioengineering Yang, Shiliang Sun, Yuhao Ma, Honghe Chew, Jia Wei Size-induced axial band structure and directional flow of a ternary-size granular material in a 3-D horizontal rotating drum |
| title | Size-induced axial band structure and directional flow of a ternary-size granular material in a 3-D horizontal rotating drum |
| title_full | Size-induced axial band structure and directional flow of a ternary-size granular material in a 3-D horizontal rotating drum |
| title_fullStr | Size-induced axial band structure and directional flow of a ternary-size granular material in a 3-D horizontal rotating drum |
| title_full_unstemmed | Size-induced axial band structure and directional flow of a ternary-size granular material in a 3-D horizontal rotating drum |
| title_short | Size-induced axial band structure and directional flow of a ternary-size granular material in a 3-D horizontal rotating drum |
| title_sort | size induced axial band structure and directional flow of a ternary size granular material in a 3 d horizontal rotating drum |
| topic | Musical Instruments Fluid Flows DRNTU::Engineering::Bioengineering |
| url | https://hdl.handle.net/10356/106307 http://hdl.handle.net/10220/48920 |
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