Size and thermal effects on sedimentation behaviors of two spheres
Gas-solid flows are commonly found in nature, as well as in industries. In such flows the size of the solid particles generally is not uniform. In addition, usually there is heat transfer between solid particles and gas flows. The hydrodynamics and heat transfer both make the behavior of gas-solid f...
| Main Authors: | , , , , |
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| Format: | Article |
| Published: |
Elsevier
2017
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| Online Access: | https://eprints.nottingham.ac.uk/44783/ |
| _version_ | 1848796996163338240 |
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| author | Yang, Bo Chen, Sheng Xiong, Yan Zhang, Rui Zheng, Chuguang |
| author_facet | Yang, Bo Chen, Sheng Xiong, Yan Zhang, Rui Zheng, Chuguang |
| author_sort | Yang, Bo |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Gas-solid flows are commonly found in nature, as well as in industries. In such flows the size of the solid particles generally is not uniform. In addition, usually there is heat transfer between solid particles and gas flows. The hydrodynamics and heat transfer both make the behavior of gas-solid flows extremely complicated. In order to reveal these effects, in this paper three cases: (1) two isothermal, (2) two hot and (3) two cold spherical particles with various size ratios are investigated using lattice Boltzmann method-immersed boundary (LB-IB). It is observed that, for the first time, the tumbling duration of both two hot particles and two cold particles settling in vertical channel, is prolonged with size ratio increasing. The differences of threshold size ratio among the three cases are significant and the threshold size ratio of two hot particles is the largest one. Especially, it is found that heat transfer affects critically the interaction of two hot particles with low size ratios. In addition, against particle size ratio increasing, heat transfer effects on the interaction between two non-identical particles become weak. |
| first_indexed | 2025-11-14T19:56:51Z |
| format | Article |
| id | nottingham-44783 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:56:51Z |
| publishDate | 2017 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-447832020-05-04T19:54:56Z https://eprints.nottingham.ac.uk/44783/ Size and thermal effects on sedimentation behaviors of two spheres Yang, Bo Chen, Sheng Xiong, Yan Zhang, Rui Zheng, Chuguang Gas-solid flows are commonly found in nature, as well as in industries. In such flows the size of the solid particles generally is not uniform. In addition, usually there is heat transfer between solid particles and gas flows. The hydrodynamics and heat transfer both make the behavior of gas-solid flows extremely complicated. In order to reveal these effects, in this paper three cases: (1) two isothermal, (2) two hot and (3) two cold spherical particles with various size ratios are investigated using lattice Boltzmann method-immersed boundary (LB-IB). It is observed that, for the first time, the tumbling duration of both two hot particles and two cold particles settling in vertical channel, is prolonged with size ratio increasing. The differences of threshold size ratio among the three cases are significant and the threshold size ratio of two hot particles is the largest one. Especially, it is found that heat transfer affects critically the interaction of two hot particles with low size ratios. In addition, against particle size ratio increasing, heat transfer effects on the interaction between two non-identical particles become weak. Elsevier 2017-11 Article PeerReviewed Yang, Bo, Chen, Sheng, Xiong, Yan, Zhang, Rui and Zheng, Chuguang (2017) Size and thermal effects on sedimentation behaviors of two spheres. International Journal of Heat and Mass Transfer, 114 . pp. 198-206. ISSN 0017-9310 http://www.sciencedirect.com/science/article/pii/S0017931017301539 10.1016/j.ijheatmasstransfer.2017.06.046 10.1016/j.ijheatmasstransfer.2017.06.046 10.1016/j.ijheatmasstransfer.2017.06.046 |
| spellingShingle | Yang, Bo Chen, Sheng Xiong, Yan Zhang, Rui Zheng, Chuguang Size and thermal effects on sedimentation behaviors of two spheres |
| title | Size and thermal effects on sedimentation behaviors of two spheres |
| title_full | Size and thermal effects on sedimentation behaviors of two spheres |
| title_fullStr | Size and thermal effects on sedimentation behaviors of two spheres |
| title_full_unstemmed | Size and thermal effects on sedimentation behaviors of two spheres |
| title_short | Size and thermal effects on sedimentation behaviors of two spheres |
| title_sort | size and thermal effects on sedimentation behaviors of two spheres |
| url | https://eprints.nottingham.ac.uk/44783/ https://eprints.nottingham.ac.uk/44783/ https://eprints.nottingham.ac.uk/44783/ |