Modeling the hydrodynamics of cocurrent gas-solid downers according to energy-minimization multi-scale theory | |
Zhang, Zhixin1,2; Hu, Shanwei1; Liu, Xinhua1; Zhao, Hui2 | |
刊名 | PARTICUOLOGY |
2016-12-01 | |
卷号 | 29期号:DEC页码:110-119 |
关键词 | Mathematical modeling Hydrodynamics Fluidization Downer Cluster Multiscale |
ISSN号 | 1674-2001 |
英文摘要 | Cocurrent gas-solid downer reactors have many applications in industry because they possess the technological advantages of a lower pressure drop, shorter residence time, and less solid backmixing when compared with traditional circulating fluidized bed risers. By introducing the concept of particle clusters explicitly, a one-dimensional model with consideration of the interphase interactions between the fluid and particles at both microscale and mesoscale is formulated for concurrent downward gas-solid flow according to energy-minimization multi-scale (EMMS) theory. A unified stability condition is proposed for the differently developed sections of gas-solid flow according to the principle of the compromise in competition between dominant mechanisms. By optimizing the number density of particle clusters with respect to the stability condition, the formulated model can be numerically solved without introducing cluster-specific empirical correlations. The EMMS-based model predicts well the axial hydrodynamics of cocurrent gas-solid downers and is expected to have a wider range of applications than the existing cluster-based models. (C) 2016 Chinese Society of Particuology and Institute of Process Engineering, Chinese. Academy of Sciences. Published by Elsevier B.V. All rights reserved. |
WOS标题词 | Science & Technology ; Technology |
类目[WOS] | Engineering, Chemical ; Materials Science, Multidisciplinary |
研究领域[WOS] | Engineering ; Materials Science |
关键词[WOS] | CIRCULATING FLUIDIZED-BED ; EMMS MODEL ; FLOW ; REACTOR ; RISER ; BEHAVIOR ; SIMULATION ; CARBON ; CFD ; PERFORMANCE |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000389114700011 |
内容类型 | 期刊论文 |
源URL | [http://ir.ipe.ac.cn/handle/122111/21679] |
专题 | 过程工程研究所_多相复杂系统国家重点实验室 |
作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.China Univ Petr, State Key Lab Heavy Oil Proc, Qingdao 266555, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Zhixin,Hu, Shanwei,Liu, Xinhua,et al. Modeling the hydrodynamics of cocurrent gas-solid downers according to energy-minimization multi-scale theory[J]. PARTICUOLOGY,2016,29(DEC):110-119. |
APA | Zhang, Zhixin,Hu, Shanwei,Liu, Xinhua,&Zhao, Hui.(2016).Modeling the hydrodynamics of cocurrent gas-solid downers according to energy-minimization multi-scale theory.PARTICUOLOGY,29(DEC),110-119. |
MLA | Zhang, Zhixin,et al."Modeling the hydrodynamics of cocurrent gas-solid downers according to energy-minimization multi-scale theory".PARTICUOLOGY 29.DEC(2016):110-119. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论