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Numerical simulation of viscous flow through spherical particle assemblage with the modified cell model
Alternative TitleChin. J. Chem. Eng.
Mao, ZS
2002-04-01
Source PublicationCHINESE JOURNAL OF CHEMICAL ENGINEERING
ISSN1004-9541
Volume10Issue:2Pages:149-162
AbstractThe cell model developed since 1950s is a useful tool for exploring the behavior of particle assemblages, but it demands further careful development of the outer cell boundary conditions so that interaction in a particle swarm is better represented. In this paper, the cell model and its development were reviewed, and the modifications of outer cell boundary conditions were suggested. At the cell outer boundary, the restriction of uniform liquid flow was removed in our simulation conducted in the reference frame fixed with the particle. Zero shear stress condition was used to evaluate the outer boundary value of the stream function. Boundary vorticity was allowed to evolve to values compatible to existing stream function at the free shear outer boundary. The fore-aft symmetry of vorticity distribution at the outer boundary is thought critical to ensure the continuity of inflow and outflow between touching neighbor cells, and is also tested in the modified cell model. Numerical simulation in terms of stream function and vorticity based on the modified cell models was carried out to shed light on the interaction between liquid and particles. Lower predicted drag coefficient by the modified cell models was interpreted with the feature of flow structure. The drag coefficient from the simulation was also compared with correlations of drag coefficient reported in literature. It is found that the modified cell model with the uniformity of external flow relaxed and the fore-aft symmetry of boundary vorticity enforced was the most satisfactory on the overall performance of prediction.; The cell model developed since 1950s is a useful tool for exploring the behavior of particle assemblages, but it demands further careful development of the outer cell boundary conditions so that interaction in a particle swarm is better represented. In this paper, the cell model and its development were reviewed, and the modifications of outer cell boundary conditions were suggested. At the cell outer boundary, the restriction of uniform liquid flow was removed in our simulation conducted in the reference frame fixed with the particle. Zero shear stress condition was used to evaluate the outer boundary value of the stream function. Boundary vorticity was allowed to evolve to values compatible to existing stream function at the free shear outer boundary. The fore-aft symmetry of vorticity distribution at the outer boundary is thought critical to ensure the continuity of inflow and outflow between touching neighbor cells, and is also tested in the modified cell model. Numerical simulation in terms of stream function and vorticity based on the modified cell models was carried out to shed light on the interaction between liquid and particles. Lower predicted drag coefficient by the modified cell models was interpreted with the feature of flow structure. The drag coefficient from the simulation was also compared with correlations of drag coefficient reported in literature. It is found that the modified cell model with the uniformity of external flow relaxed and the fore-aft symmetry of boundary vorticity enforced was the most satisfactory on the overall performance of prediction.
KeywordCell Model Numerical Simulation Particle Assemblage Boundary Condition Drag Coefficient Correlation
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
URL查看原文
Indexed BySCI
Language英语
WOS KeywordINTERMEDIATE REYNOLDS-NUMBERS ; PRESSURE-DROP ; HYDRODYNAMICS ; SPHERES ; LIQUID ; PAST
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000175713600003
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5633
Collection研究所(批量导入)
AffiliationChinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Mao, ZS. Numerical simulation of viscous flow through spherical particle assemblage with the modified cell model[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2002,10(2):149-162.
APA Mao, ZS.(2002).Numerical simulation of viscous flow through spherical particle assemblage with the modified cell model.CHINESE JOURNAL OF CHEMICAL ENGINEERING,10(2),149-162.
MLA Mao, ZS."Numerical simulation of viscous flow through spherical particle assemblage with the modified cell model".CHINESE JOURNAL OF CHEMICAL ENGINEERING 10.2(2002):149-162.
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