An EMMS-based multi-fluid model (EFM) for heterogeneous gas-solid riser flows: Part II. An alternative formulation from dominant mechanisms
文献类型：期刊论文
| 作者 | Wang, Junwu1 ; Zhou, Quan1,2; Hong, Kun1,2; Wang, Wei1; Li, Jinghai1
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| 刊名 | CHEMICAL ENGINEERING SCIENCE
 |
| 出版日期 | 2012-06-18 |
| 卷号 | 75期号:0页码:349-358 |
| 关键词 | Stability condition Meso-scale Fluidization Particulate processes Multiphase flow Powder technology |
| ISSN号 | 0009-2509 |
| 通讯作者 | Wang, JW |
| 英文摘要 | The gas-solid flow in circulating fluidized bed risers is characterized by the existence of two-phase structure with particle-rich dense phase and gas-rich dilute phase, but in traditional coarse grid simulation using two-fluid models, the constitutive laws are based on the assumption of structural homogeneity inside computational cells, which seems to be inaccurate for riser flows. One way out is to carry out coarse grid simulation with proper meso-scale or sub-grid scale models considering the effect of heterogeneous structures on the constitutive laws. In this study, we propose an EMMS-based two-fluid model (EFM), which features: (i) the particle-rich dense phase and the gas-rich dilute phase representing the physical realizations of particle-dominated and gas-dominated mechanisms are defined as the two interpenetrating continua; (ii) the interactions between heterogeneous gas-solid flow are decomposed into the interactions within three homogeneous sub-systems according to the concept of EMMS model, that is, dilute-phase, dense-phase and inter-phase; (iii) the constitutive laws are determined by the EMMS model featuring a stability condition. It was shown that the hydrodynamics of a riser predicted by EFM are in a good agreement with experimental data, indicating the feasibility of EFM for describing the hydrodynamics of heterogeneous gas-solid flow in risers. (C) 2012 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | EULERIAN SIMULATION ; DRAG COEFFICIENT ; COMPLEX-SYSTEMS ; MULTICOMPONENT SYSTEMS ; PARTICULATE FLOWS ; CFD SIMULATION ; FCC PARTICLES ; 2-PHASE FLOW ; BEDS ; FLUIDIZATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000303826800038 |
| 公开日期 | 2013-10-18 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/3805]  |
| 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, EMMS Grp, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100490, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Junwu,Zhou, Quan,Hong, Kun,et al. An EMMS-based multi-fluid model (EFM) for heterogeneous gas-solid riser flows: Part II. An alternative formulation from dominant mechanisms[J]. CHEMICAL ENGINEERING SCIENCE,2012,75(0):349-358. |
| APA | Wang, Junwu,Zhou, Quan,Hong, Kun,Wang, Wei,&Li, Jinghai.(2012).An EMMS-based multi-fluid model (EFM) for heterogeneous gas-solid riser flows: Part II. An alternative formulation from dominant mechanisms.CHEMICAL ENGINEERING SCIENCE,75(0),349-358. |
| MLA | Wang, Junwu,et al."An EMMS-based multi-fluid model (EFM) for heterogeneous gas-solid riser flows: Part II. An alternative formulation from dominant mechanisms".CHEMICAL ENGINEERING SCIENCE 75.0(2012):349-358. |
入库方式： OAI收割
来源：过程工程研究所
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