Effects of liquid property on onset velocity of circulating fluidization in liquid-solid systems: A CFD-DEM simulation
文献类型：期刊论文
| 作者 | Hua, Leina3; Lu, Liqiang2; Yang, Ning1,3 |
| 刊名 | POWDER TECHNOLOGY
 |
| 出版日期 | 2020-03-15 |
| 卷号 | 364页码:622-634 |
| 关键词 | Liquid-solid system Fluidization Transition velocity Bed empty time test Discrete element model Liquid property |
| ISSN号 | 0032-5910 |
| DOI | 10.1016/j.powtec.2020.01.051 |
| 英文摘要 | Knowledge on regime transition from conventional to circulating fluidization is important to scale-up and operation of liquid-solid fluidized systems in industrial applications. Previous experimental studies reported that the onset velocity measured by bed empty time test is pertinent to the physical properties of particle and liquid, and independent of solid inventory, bed geometry, and configuration. The effect of liquid properties is, however, not clear yet since tap water is usually used as the working fluid in laboratory test for convenience. To address this problem, a Computational Fluid Dynamics-Discrete Element Method (CFD-DEM) model is applied to numerically measure the onset velocity of particles in different liquid media. The model is first validated in terms of the experimental data of bed expansion in literature. Then several kinds of particles and three kinds of liquid media of different densities and viscosities are further simulated. We find that the Reynolds number based on onset velocity and Archimedes number follows a power-law relationship. With the decrease of Archimedes number, the discrepancy of Reynolds number based on onset velocity and that on particle terminal velocity becomes highly significant. The ratio of the onset velocity to particle terminal velocity for various particles in one liquid medium is not a constant, and instead dependent on both the particle and liquid properties. (C) 2020 Elsevier B.V. All rights reserved. |
| WOS关键词 | FLOW ; GAS ; BEDS ; BEHAVIOR ; PARTICULATE ; DISPERSION ; PROFILES ; SOFTWARE ; COHESION ; MODEL |
| 资助项目 | National Key Research and Development Program of China[2017YFE0106500] ; National Natural Science Foundation of China[91834303] ; National Natural Science Foundation of China[21925805] ; National Natural Science Foundation of China[91634203] ; Strategic Priority Research Program, Chinese Academy of Sciences[XDA21030700] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000528218100055 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; Strategic Priority Research Program, Chinese Academy of Sciences |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/40413]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Yang, Ning |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China 2.US DOE, Natl Energy Technol Lab, Morgantown, WV USA 3.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 | Hua, Leina,Lu, Liqiang,Yang, Ning. Effects of liquid property on onset velocity of circulating fluidization in liquid-solid systems: A CFD-DEM simulation[J]. POWDER TECHNOLOGY,2020,364:622-634. |
| APA | Hua, Leina,Lu, Liqiang,&Yang, Ning.(2020).Effects of liquid property on onset velocity of circulating fluidization in liquid-solid systems: A CFD-DEM simulation.POWDER TECHNOLOGY,364,622-634. |
| MLA | Hua, Leina,et al."Effects of liquid property on onset velocity of circulating fluidization in liquid-solid systems: A CFD-DEM simulation".POWDER TECHNOLOGY 364(2020):622-634. |
入库方式： OAI收割
来源：过程工程研究所
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