Physical mapping of fluidization regimes - the EMMS approach
文献类型：期刊论文
| 作者 | Ge, W; Li, JH |
| 刊名 | CHEMICAL ENGINEERING SCIENCE
 |
| 出版日期 | 2002-09-01 |
| 卷号 | 57期号:18页码:3993-4004 |
| 关键词 | choking fluidization hydrodynamics multi-scale regime transition stability |
| ISSN号 | 0009-2509 |
| 其他题名 | Chem. Eng. Sci. |
| 中文摘要 | The existence of multiple regimes of distinctive flow structure is a remarkable characteristic of fluidization, which is far from being physically interpreted under a unified approach. The energy minimization multi-scale model (Particle-Fluid Two-Phase Flow, the Energy Minimization Multi-Scale Method, Metallurgical Industry Press, Beijing, 1994) is potentially such an approach in which the inclusion of stability criteria enables the prediction of heterogeneity and non-linear behaviors in fluidized beds. However, fully analytical solution of the model is impossible so far, and numerical solutions have resorted to general optimizing software. Therefore, the detailed characteristics of the solutions and their theoretical implications have not been fully explored. In this paper, we have achieved this by a rigorous numerical approach and by retrieving all missing roots, which leads to physical mapping of fluidization regimes. The model is also extended to unsteady conditions with acceleration and simplified by employing a single stability criterion, which identifies choking as a jump between two branches of the stable solution. Calculations based on this version are in reasonable agreement with measurements on bench, pilot and commercial scale circulating fluidized beds. (C) 2002 Elsevier Science Ltd. All rights reserved. |
| 英文摘要 | The existence of multiple regimes of distinctive flow structure is a remarkable characteristic of fluidization, which is far from being physically interpreted under a unified approach. The energy minimization multi-scale model (Particle-Fluid Two-Phase Flow, the Energy Minimization Multi-Scale Method, Metallurgical Industry Press, Beijing, 1994) is potentially such an approach in which the inclusion of stability criteria enables the prediction of heterogeneity and non-linear behaviors in fluidized beds. However, fully analytical solution of the model is impossible so far, and numerical solutions have resorted to general optimizing software. Therefore, the detailed characteristics of the solutions and their theoretical implications have not been fully explored. In this paper, we have achieved this by a rigorous numerical approach and by retrieving all missing roots, which leads to physical mapping of fluidization regimes. The model is also extended to unsteady conditions with acceleration and simplified by employing a single stability criterion, which identifies choking as a jump between two branches of the stable solution. Calculations based on this version are in reasonable agreement with measurements on bench, pilot and commercial scale circulating fluidized beds. (C) 2002 Elsevier Science 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] | FLOW ; BEDS ; GAS |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000178783000020 |
| 公开日期 | 2013-11-12 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/5595]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | Chinese Acad Sci, MultiPhase React Lab, Inst Proc Engn, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ge, W,Li, JH. Physical mapping of fluidization regimes - the EMMS approach[J]. CHEMICAL ENGINEERING SCIENCE,2002,57(18):3993-4004. |
| APA | Ge, W,&Li, JH.(2002).Physical mapping of fluidization regimes - the EMMS approach.CHEMICAL ENGINEERING SCIENCE,57(18),3993-4004. |
| MLA | Ge, W,et al."Physical mapping of fluidization regimes - the EMMS approach".CHEMICAL ENGINEERING SCIENCE 57.18(2002):3993-4004. |
入库方式： OAI收割
来源：过程工程研究所
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