Knowledge Management System Of Institute of process engineering,CAS
| Exploring a unified EMMS drag model for gas-solid fluidization | |
Geng, Jingwei; Tian, Yujie; Wang, Wei1
| |
| 2022-04-06 | |
| Source Publication | CHEMICAL ENGINEERING SCIENCE
 |
| ISSN | 0009-2509 |
| Volume | 251Pages:17 |
| Abstract | Gas-solid fluidization is characterized by pervasive, dilute-dense two-phase flow structures, which need mesoscale drag modeling to account for their subgrid effects. The classic formulation of the energyminimization multi-scale (EMMS) drag modeling requires a semi-empirical correlation of cluster diameter. To avoid using such a phenomenological description of mesoscale structures, in this work, we propose a two-level averaging approach: First, the mean drag in a fine-grid cell is defined as a weighted sum of the drag force in both the dilute and dense phases; Then, the second-level averaging is performed at the coarse-grid scale, where the unified EMMS drag is defined, and determined by performing a series expansion with respect to the phase-mean points of both the dilute and dense phases, respectively. The unified EMMS drag is validated with comparison to fine-grid simulation in a periodic domain and coarse-grid simulation of realistic fluidized beds, both showing fair agreement.(c) 2022 Elsevier Ltd. All rights reserved. |
| Keyword | Mesoscale Fluidization Drag EMMS CFD simulation |
| DOI | 10.1016/j.ces.2022.117444 |
| Language | 英语 |
| WOS Keyword | DISCRETE PARTICLE SIMULATION ; AVERAGED 2-FLUID MODEL ; STRUCTURE-DEPENDENT ANALYSIS ; EULERIAN SIMULATION ; ENERGY-DISSIPATION ; MULTISCALE CFD ; HIGH-DENSITY ; FLOWS ; BED ; RISER |
| Funding Project | National Natural Science Foundation of China[21625605] ; National Natural Science Foundation of China[21821005] ; National Natural Science Foundation of China[91834302] ; National Natural Science Foundation of China[22161142006] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA17010202] ; Innovation Academy for Green Manufac-ture, Chinese Academy of Sciences[IAGM-2019-A03] |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Chemical |
| Funding Organization | National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Innovation Academy for Green Manufac-ture, Chinese Academy of Sciences |
| WOS ID | WOS:000779473500002 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/53242 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Wang, Wei |
| Affiliation | 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 |
| Recommended Citation GB/T 7714 | Geng, Jingwei,Tian, Yujie,Wang, Wei. Exploring a unified EMMS drag model for gas-solid fluidization[J]. CHEMICAL ENGINEERING SCIENCE,2022,251:17. |
| APA | Geng, Jingwei,Tian, Yujie,&Wang, Wei.(2022).Exploring a unified EMMS drag model for gas-solid fluidization.CHEMICAL ENGINEERING SCIENCE,251,17. |
| MLA | Geng, Jingwei,et al."Exploring a unified EMMS drag model for gas-solid fluidization".CHEMICAL ENGINEERING SCIENCE 251(2022):17. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment