DEM simulation of standpipes under the negative pressure gradient
文献类型：期刊论文
| 作者 | Liu, Qi1,2; Peng, Li1,2; Xu, Ji1; Zou, Zheng1; Zhu, Qingshan1,2; Li, Hongzhong1,2 |
| 刊名 | CHEMICAL ENGINEERING SCIENCE
 |
| 出版日期 | 2021-12-31 |
| 卷号 | 246页码:11 |
| 关键词 | Discrete Element Method (DEM) Negative pressure gradient Standpipe Moving bed Equivalent gravity |
| ISSN号 | 0009-2509 |
| DOI | 10.1016/j.ces.2021.116880 |
| 英文摘要 | A new method based on the force balance was proposed to simulate the flow hydrodynamics of particles in standpipes under the negative pressure gradient. The influence of drag force was integrated into the gravity term and formed a new variable-equivalent gravity (F-e). The acceleration of equivalent gravity (g(e)) substituted the original acceleration of gravity (g) in a single-phase DEM simulation. In our study, the influence of orifice size and back pressure on particle flow has been studied. The mass flow rate fits well with the experiment results and increases with raising orifice size and decreasing pressure. The voi-dage distributions and velocity profiles have also been analyzed to investigate the flow behavior. The new method enables the quantitative and qualitative prediction of mass flow rate in a single-phase Discrete Element Method (DEM) simulation. (C) 2021 Elsevier Ltd. All rights reserved. |
| WOS关键词 | STATE GRANULAR FLOW ; BED FLOW ; SOLIDS ; FLUIDIZATION ; HOPPER ; VALIDATION ; DISCRETE ; DYNAMICS ; SILO |
| 资助项目 | Science Fund for Creative Research Groups of the National Natural Science Foundation of China[21921005] ; National Natural Science Foundation of China[21736010] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000705827800011 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | Science Fund for Creative Research Groups of the National Natural Science Foundation of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/50574]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Zhu, Qingshan; Li, Hongzhong |
| 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 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Qi,Peng, Li,Xu, Ji,et al. DEM simulation of standpipes under the negative pressure gradient[J]. CHEMICAL ENGINEERING SCIENCE,2021,246:11. |
| APA | Liu, Qi,Peng, Li,Xu, Ji,Zou, Zheng,Zhu, Qingshan,&Li, Hongzhong.(2021).DEM simulation of standpipes under the negative pressure gradient.CHEMICAL ENGINEERING SCIENCE,246,11. |
| MLA | Liu, Qi,et al."DEM simulation of standpipes under the negative pressure gradient".CHEMICAL ENGINEERING SCIENCE 246(2021):11. |
入库方式： OAI收割
来源：过程工程研究所
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