Study on free fall surfaces in three-dimensional hopper flows
文献类型：期刊论文
| 作者 | Tian, Y.1 ; Lin, P.1; Zhang, S.1,2; Wang, C. L.1; Wan, J. F.1,2; Yang, L.1
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| 刊名 | ADVANCED POWDER TECHNOLOGY
 |
| 出版日期 | 2015-07-01 |
| 卷号 | 26页码:1191-1199 |
| 关键词 | Free fall surfaces DEM Funnel flow GPU |
| ISSN号 | 0921-8831 |
| DOI | 10.1016/j.apt.2015.05.015 |
| 英文摘要 | The flow rate of grains discharging from hoppers can be quantified by Beverloo's law, where the assumption of the free fall arch (FFA) it is very useful in understanding the physical picture of this process but is difficult to be observed directly. Here simulations of 2,000,000 spheres discharging from three-dimensional flat-bottomed hopper with circular outlet were performed on multiple GPUs and the free fall surfaces were explored by statistical analysis. The free fall surfaces in hopper flows were plotted and can be fitted into parabolic surfaces. Other quantities, such as velocity fields and spatial profiles of coordination number, were investigated to support the free fall surfaces we obtained. Although inconsistent with the initial assumption, it is shown that the free fall surfaces can be statistically described and this work provides new insights for understanding the processes of hopper flows. (C) 2015 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved. |
| WOS关键词 | PREDICTING DISCHARGE DYNAMICS ; 2-DIMENSIONAL GRANULAR FLOW ; ELEMENT METHOD DEM ; MODEL ; SOLIDS ; SIMULATIONS ; PRESSURE |
| 资助项目 | National Magnetic Confinement Fusion Science Program of China[2014GB104002] ; Chinese Academy of Sciences[XDA03030100] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000359321400019 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | National Magnetic Confinement Fusion Science Program of China ; Chinese Academy of Sciences |
| 源URL | [http://119.78.100.186/handle/113462/40341]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Yang, L. |
| 作者单位 | 1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tian, Y.,Lin, P.,Zhang, S.,et al. Study on free fall surfaces in three-dimensional hopper flows[J]. ADVANCED POWDER TECHNOLOGY,2015,26:1191-1199. |
| APA | Tian, Y.,Lin, P.,Zhang, S.,Wang, C. L.,Wan, J. F.,&Yang, L..(2015).Study on free fall surfaces in three-dimensional hopper flows.ADVANCED POWDER TECHNOLOGY,26,1191-1199. |
| MLA | Tian, Y.,et al."Study on free fall surfaces in three-dimensional hopper flows".ADVANCED POWDER TECHNOLOGY 26(2015):1191-1199. |
入库方式： OAI收割
来源：近代物理研究所
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