Fluctuation of particles during funnel flow discharge from flat-bottomed silos
文献类型：期刊论文
| 作者 | Zhang, Dancheng1,2; Yang, Xiaodong1,2; Zhan, Jinhui1; Liu, Xiaoxing1,2 |
| 刊名 | AICHE JOURNAL
 |
| 出版日期 | 2021-09-04 |
| 页码 | 13 |
| 关键词 | discrete element method fluctuation granular flow resonance silo |
| ISSN号 | 0001-1541 |
| DOI | 10.1002/aic.17414 |
| 英文摘要 | Although resonant motion of particles during mass flow discharge from silos has been extensively investigated by earlier researchers, the appearance of such phenomenon during funnel flow discharge has not been emphasized. In this work, the flow behavior of particles during funnel flow discharge from flat-bottomed silos has been investigated by conducting three-dimensional Discrete Element Method (DEM) simulations. It is found that particles in the upper part of flowing zone move collectively, manifested by the oscillatory fluctuations of the velocity and the non-Gaussian characteristics of the fluctuations of individual velocity around the average. Correlation analysis and discrete Fourier transform have been performed to characterize the emission and propagation of velocity fluctuation. It is found that the observed resonant motion of particles is induced by the regular fluctuation of contact force between particles, and there exists an intermediate region in the converging part of the flowing zone. The bottom boundary of this region corresponds to the emission source from which the velocity wave propagates upward and downward. Its upper boundary coincides with that of the converging part of the flowing zone and is featured by the most violent fluctuation of contact force. The simulation results thus suggest that the discharge of granular assembly seems to be determined by the rheological behavior of particles in this intermediate region. |
| WOS关键词 | GRANULAR FLOW ; ROLLING RESISTANCE ; WALL ; MODEL ; DENSE ; DISCRETE ; SIMULATION ; DYNAMICS ; STRESSES ; SHAPE |
| 资助项目 | Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM-2019-A13] ; National Key Research and Development Program of China[2016YFF0102601] ; National Natural Science Foundation of China[21576265] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000693503100001 |
| 出版者 | WILEY |
| 资助机构 | Innovation Academy for Green Manufacture, Chinese Academy of Sciences ; National Key Research and Development Program of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/50150]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Liu, Xiaoxing |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Dancheng,Yang, Xiaodong,Zhan, Jinhui,et al. Fluctuation of particles during funnel flow discharge from flat-bottomed silos[J]. AICHE JOURNAL,2021:13. |
| APA | Zhang, Dancheng,Yang, Xiaodong,Zhan, Jinhui,&Liu, Xiaoxing.(2021).Fluctuation of particles during funnel flow discharge from flat-bottomed silos.AICHE JOURNAL,13. |
| MLA | Zhang, Dancheng,et al."Fluctuation of particles during funnel flow discharge from flat-bottomed silos".AICHE JOURNAL (2021):13. |
入库方式： OAI收割
来源：过程工程研究所
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