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Two-fluid modeling of Geldart A particles in gas-solid micro-fluidized beds
Liu, Xiaoxing1; Zhu, Chuanqiang1,2; Geng, Shujun1,2; Yao, Meiqin1; Zhan, Jinhui1; Xua, Guangwen1
2015-08-01
Source PublicationPARTICUOLOGY
ISSN1674-2001
Volume21Issue:AUGPages:118-127
AbstractThe fluidization behavior of Geldart A particles in a gas-solid micro-fluidized bed was investigated by Eulerian-Eulerian numerical simulation. The commonly used Gidaspow drag model was tested first. The simulation showed that the predicted minimum bubbling velocities were significantly lower than the experimental data even when an extremely fine grid size (of approximately one particle diameter) was used. The modified Gibilaro drag model was therefore tested next. The predicted minimum bubbling velocity and bed voidage were in reasonable agreement with the experimental data available in literature. The experimentally observed regime transition phenomena from bubbling to slugging were also reproduced successfully in the simulations. Parametric studies indicated that the solid-wall boundary conditions had a significant impact on the predicted gas and solid flow behavior. (C) 2014 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
KeywordMicro-fluidized Bed Geldart a Particle Two-fluid Model Boundary Condition Drag Model
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.partic.2014.05.012
Indexed BySCI
Language英语
WOS KeywordFCC PARTICLES ; EXPERIMENTAL VALIDATION ; TURBULENT FLUIDIZATION ; NUMERICAL-SIMULATION ; EULERIAN SIMULATION ; PART I ; HYDRODYNAMICS ; BEHAVIOR ; FLOWS ; EXPANSION
WOS Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Chemical ; Materials Science, Multidisciplinary
WOS IDWOS:000356980700013
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Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19319
Collection多相复杂系统国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst Inst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Liu, Xiaoxing,Zhu, Chuanqiang,Geng, Shujun,et al. Two-fluid modeling of Geldart A particles in gas-solid micro-fluidized beds[J]. PARTICUOLOGY,2015,21(AUG):118-127.
APA Liu, Xiaoxing,Zhu, Chuanqiang,Geng, Shujun,Yao, Meiqin,Zhan, Jinhui,&Xua, Guangwen.(2015).Two-fluid modeling of Geldart A particles in gas-solid micro-fluidized beds.PARTICUOLOGY,21(AUG),118-127.
MLA Liu, Xiaoxing,et al."Two-fluid modeling of Geldart A particles in gas-solid micro-fluidized beds".PARTICUOLOGY 21.AUG(2015):118-127.
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