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Physical mapping of fluidization regimes - the EMMS approach
Alternative TitleChem. Eng. Sci.
Ge, W; Li, JH
2002-09-01
Source PublicationCHEMICAL ENGINEERING SCIENCE
ISSN0009-2509
Volume57Issue:18Pages:3993-4004
AbstractThe 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.; 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.
KeywordChoking Fluidization Hydrodynamics Multi-scale Regime Transition Stability
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
URL查看原文
Indexed BySCI
Language英语
WOS KeywordFLOW ; BEDS ; GAS
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000178783000020
Citation statistics
Cited Times:83[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5595
Collection研究所(批量导入)
AffiliationChinese Acad Sci, MultiPhase React Lab, Inst Proc Engn, Beijing 100080, Peoples R China
Recommended Citation
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.
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