Experiments and CFD-DEM simulations of cohesive particles sedimentation in stilled fluid
文献类型：期刊论文
| 作者 | Lu, Runrun2; Zhang, Lin2; Ricoux, Philippe1; Wang, Limin2 |
| 刊名 | POWDER TECHNOLOGY
 |
| 出版日期 | 2019-11-01 |
| 卷号 | 356页码:222-230 |
| 关键词 | Cohesive force CED-DEM Coefficient quantization Correlation method |
| ISSN号 | 0032-5910 |
| DOI | 10.1016/j.powtec.2019.05.018 |
| 英文摘要 | Particle agglomeration is observed in slurry loop reactors due to the presence of cohesive force between the swollen polyethylene (PE) particles, which has direct impact on the hydrodynamics predictions. However, a qualitative study of the cohesive forces in the suspensions of swollen PE particle at the microscopic level is still lacking. In this study, a simulation contrast experiment method for quantification of cohesive force is proposed. The simulation method is based on a coupled computational fluid dynamics and discrete element method (CFD-DEM) approach, which have been used to study and explain the effects of cohesion on fluidization of particles. The DEM allows the dynamic simulation of the solid phase motion by tracking individual particles, whereas a CFD algorithm is commonly used to simulate the flow field of the continuous fluid phase. The swollen PE particles, initially arranged within a cylinder region in a quiescent hot dodecane, are made to fall, and their sedimentation induces the liquid flow around them. The interactions between the particle motion and the liquid flow are favorably compared with the experimental data, demonstrating the value of the cohesive energy density for the swollen PE particles is between 4000 J/m(3) and 5000 J/m(3). (C) 2019 Published by Elsevier B.V. |
| WOS关键词 | NUMERICAL-SIMULATION ; SURFACE-ENERGY ; GAS ; ADHESION ; MODEL ; FLOW ; CONTACT ; VORTEX ; SPHERE ; BED |
| 资助项目 | National Natural Science Foundation of China[51776212] ; National Natural Science Foundation of China[91434113] ; National Key R&D Program of China[2018YFB1500902] ; Chinese Academy of Sciences[QYZDB-SSW-SYS029] ; National Key Basic Research Program of China[2015CB251402] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000504777100023 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; National Key R&D Program of China ; Chinese Academy of Sciences ; National Key Basic Research Program of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/38563]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Wang, Limin |
| 作者单位 | 1.TOTAL Sci Div, Data Proc & Modeling, 24 Cours Michelet La Def 10, F-92069 Paris, France 2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lu, Runrun,Zhang, Lin,Ricoux, Philippe,et al. Experiments and CFD-DEM simulations of cohesive particles sedimentation in stilled fluid[J]. POWDER TECHNOLOGY,2019,356:222-230. |
| APA | Lu, Runrun,Zhang, Lin,Ricoux, Philippe,&Wang, Limin.(2019).Experiments and CFD-DEM simulations of cohesive particles sedimentation in stilled fluid.POWDER TECHNOLOGY,356,222-230. |
| MLA | Lu, Runrun,et al."Experiments and CFD-DEM simulations of cohesive particles sedimentation in stilled fluid".POWDER TECHNOLOGY 356(2019):222-230. |
入库方式： OAI收割
来源：过程工程研究所
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