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Analysis of flow structure and calculation of drag coefficient for concurrent-up gas-solid flow
Alternative TitleChin. J. Chem. Eng.
Yang, N; Wang, W; Ge, W; Li, JH
2003-02-01
Source PublicationCHINESE JOURNAL OF CHEMICAL ENGINEERING
ISSN1004-9541
Volume11Issue:1Pages:79-84
AbstractThis study investigates the heterogeneous structure and its influence on drag coefficient for concurrent-up gas-solid flow. The energy-minimization multi-scale (EMMS) model is modified to simulate the variation of structure parameters with solids concentration, showing the tendency for particles to aggregate to form clusters and for fluid to pass around clusters. The global drag coefficient is resolved into that for the dense phase, for the dilute phase and for the so-called inter-phase, all of which can be obtained from their respective phase-specific structure parameters. The computational results show that the drag coefficients of the different phases are quite different, and the global drag coefficient calculated from the EMMS approach is much lower than that from the correlation of Wen and Yu. The simulation results demonstrate that the EMMS approach can well describe the heterogeneous flow structure, and is very promising for incorporation into the two-fluid model or the discrete particle model as the closure law for drag coefficient.; This study investigates the heterogeneous structure and its influence on drag coefficient for concurrent-up gas-solid flow. The energy-minimization multi-scale (EMMS) model is modified to simulate the variation of structure parameters with solids concentration, showing the tendency for particles to aggregate to form clusters and for fluid to pass around clusters. The global drag coefficient is resolved into that for the dense phase, for the dilute phase and for the so-called inter-phase, all of which can be obtained from their respective phase-specific structure parameters. The computational results show that the drag coefficients of the different phases are quite different, and the global drag coefficient calculated from the EMMS approach is much lower than that from the correlation of Wen and Yu. The simulation results demonstrate that the EMMS approach can well describe the heterogeneous flow structure, and is very promising for incorporation into the two-fluid model or the discrete particle model as the closure law for drag coefficient.
KeywordDrag Coefficient Two-phase Flow Multi-scale Flow Structure Two-fluid Model
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
URL查看原文
Indexed BySCI
Language英语
WOS KeywordFLUIDIZED-BEDS ; KINETIC-THEORY ; SIMULATION ; RISER ; HYDRODYNAMICS ; MODEL
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000181603300014
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5267
Collection研究所(批量导入)
AffiliationChinese Acad Sci, Inst Proc Engn, Multiphase React Lab, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Yang, N,Wang, W,Ge, W,et al. Analysis of flow structure and calculation of drag coefficient for concurrent-up gas-solid flow[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2003,11(1):79-84.
APA Yang, N,Wang, W,Ge, W,&Li, JH.(2003).Analysis of flow structure and calculation of drag coefficient for concurrent-up gas-solid flow.CHINESE JOURNAL OF CHEMICAL ENGINEERING,11(1),79-84.
MLA Yang, N,et al."Analysis of flow structure and calculation of drag coefficient for concurrent-up gas-solid flow".CHINESE JOURNAL OF CHEMICAL ENGINEERING 11.1(2003):79-84.
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