CFD-DEM simulation of polydisperse gas-solid flow of Geldart A particles in bubbling micro-fluidized beds
文献类型：期刊论文
| 作者 | Li, Shijiao1,2; Zhao, Peng1,3; Xu, Ji1,3; Zhang, Li2; Wang, Junwu1,3,4
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| 刊名 | CHEMICAL ENGINEERING SCIENCE
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| 出版日期 | 2022-05-18 |
| 卷号 | 253页码:13 |
| ISSN号 | 0009-2509 |
| 关键词 | Fluidization Multiphase flow CFD-DEM method Gas-solid flow Particle size distribution Segregation |
| DOI | 10.1016/j.ces.2022.117551 |
| 英文摘要 | Polydisperse particles are ubiquitous, yet their unique roles are inadequately understood. In this study, CFD-DEM study on the fluidization of polydisperse particles in bubbling micro-fluidized beds was performed. The method was firstly validated by the experimentally measured bed expansion characteristics and voidage of emulsion phase. Detailed analysis of bed hydrodynamics was then performed. It was shown that (i) gas back-mixing is minimized in micro-fluidized beds due to the near plug gas flow; (ii) bubble pattern in micro and large fluidized beds is similar; (iii) particle size distribution (PSD) enhances fluidization quality in terms of higher bed expansion and higher voidage of emulsion phase, where "fines" is the root cause; and (iv) significant axial segregation is only observed in the case of wide PSD, and microscale segregation analysis indicates that coarse particles are preferentially following the motion of bubbles. Present study not only offers insights into the role of PSD in gas fluidization, but also sheds light on the similarity and difference between micro and large fluidized beds.@ 2022 Elsevier Ltd. All rights reserved. |
| WOS关键词 | COARSE GRID SIMULATION ; EMMS DRAG MODEL ; SIZE DISTRIBUTION ; GRANULAR DYNAMICS ; RESIDENCE TIME ; SEGREGATION ; DISTRIBUTIONS ; VELOCITY ; DISPERSE ; BEHAVIOR |
| 资助项目 | National Natural Science Foundation of China[11988102] ; National Natural Science Foundation of China[21978295] ; National Natural Science Foundation of China[91834303] ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM-2019-A13] ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences[QYZDJ-SSW-JSC029] ; Transfor-mational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences[XDA21030700] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000789635800004 |
| 资助机构 | National Natural Science Foundation of China ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences ; Transfor-mational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/53249]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Wang, Junwu |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, POB 353, Beijing 100190, Peoples R China 2.Shenyang Univ Chem Technol, Sch Chem Engn, Shenyang 110142, Peoples R China 3.Univ Chinese Acad Sci, Sch Chem Engn, POB 353, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Innovat Acad Green Manufacture, POB 353, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Shijiao,Zhao, Peng,Xu, Ji,et al. CFD-DEM simulation of polydisperse gas-solid flow of Geldart A particles in bubbling micro-fluidized beds[J]. CHEMICAL ENGINEERING SCIENCE,2022,253:13. |
| APA | Li, Shijiao,Zhao, Peng,Xu, Ji,Zhang, Li,&Wang, Junwu.(2022).CFD-DEM simulation of polydisperse gas-solid flow of Geldart A particles in bubbling micro-fluidized beds.CHEMICAL ENGINEERING SCIENCE,253,13. |
| MLA | Li, Shijiao,et al."CFD-DEM simulation of polydisperse gas-solid flow of Geldart A particles in bubbling micro-fluidized beds".CHEMICAL ENGINEERING SCIENCE 253(2022):13. |
入库方式： OAI收割
来源：过程工程研究所
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