An Approach for Drag Correction Based on the Local Heterogeneity for Gas-Solid Flows
文献类型:期刊论文
作者 | Li, Tingwen1,2; Wang, Limin3; Rogers, William1; Zhou, Guofeng3; Ge, Wei3 |
刊名 | AICHE JOURNAL |
出版日期 | 2017-04-01 |
卷号 | 63期号:4页码:1203-1212 |
ISSN号 | 0001-1541 |
关键词 | Computational Fluid Dynamics Gas-solid Flow Drag Model Direct Numerical Simulation Heterogeneous Structure Sub-grid Model |
DOI | 10.1002/aic.15507 |
文献子类 | Article |
英文摘要 | The drag models typically used for gas-solids interaction are mainly developed based on homogeneous systems of flow passing fixed particle assembly. It has been shown that the heterogeneous structures, i.e., clusters and bubbles in fluidized beds, need to be resolved to account for their effect in the numerical simulations. Since the heterogeneity is essentially captured through the local concentration gradient in the computational cells, this study proposes a simple approach to account for the non-uniformity of solids spatial distribution inside a computational cell and its effect on the interaction between gas and solid phases. To validate this approach, the predicted drag coefficient has been compared to the results from direct numerical simulations. In addition, the need to account for this type of heterogeneity is discussed for a periodic riser flow simulation with highly resolved numerical grids and the impact of the proposed correction for drag is demonstrated. (C) 2016 American Institute of Chemical Engineers AIChE J, 63: 1203-1212, 2017 |
WOS关键词 | Direct Numerical-simulation ; Structure-dependent Drag ; Fluidized-beds ; Cfd Simulation ; Model ; Systems ; Spheres |
WOS研究方向 | Engineering |
语种 | 英语 |
WOS记录号 | WOS:000398048500003 |
资助机构 | National Energy Technology Laboratory's under RES(DE-FE0004000) ; National Natural Science Foundation of China(91434113) ; National Program on Key Basic Research Project(2015CB251402) ; Chinese Academy of Sciences(QYZDB-SSW-SYS029) |
源URL | [http://ir.ipe.ac.cn/handle/122111/22152] |
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.US DOE, Natl Energy Technol Lab, Morgantown, WV 26505 USA 2.AECOM, Morgantown, WV 26505 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 | Li, Tingwen,Wang, Limin,Rogers, William,et al. An Approach for Drag Correction Based on the Local Heterogeneity for Gas-Solid Flows[J]. AICHE JOURNAL,2017,63(4):1203-1212. |
APA | Li, Tingwen,Wang, Limin,Rogers, William,Zhou, Guofeng,&Ge, Wei.(2017).An Approach for Drag Correction Based on the Local Heterogeneity for Gas-Solid Flows.AICHE JOURNAL,63(4),1203-1212. |
MLA | Li, Tingwen,et al."An Approach for Drag Correction Based on the Local Heterogeneity for Gas-Solid Flows".AICHE JOURNAL 63.4(2017):1203-1212. |
入库方式: OAI收割
来源:过程工程研究所
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