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Pseudo-fluid simulation of transient behaviors in a CFB riser
Alternative TitleChin. J. Chem. Eng.
Wang, W; Li, YC
2002-02-01
Source PublicationCHINESE JOURNAL OF CHEMICAL ENGINEERING
ISSN1004-9541
Volume10Issue:1Pages:77-83
AbstractThe kinetic theory of granular flow (KTGF) is modified to fit the Einstein's equation for effective viscosity of dilute flow. A pseudo-fluid approach based on this modified KTGF is used to simulate the dynamic formation and dissipation of clusters in a circulating fluidized bed riser. The agglomeration of particles reduces slip velocity within particle clusters, and hence results in two reverse trends: discrete particles are lifted by air while particle clusters fall down along the wall. The dynamic equilibrium of these two types of motion leads to the characteristic sigmoid profile of solid concentration along the longitudinal direction. The predicted solid velocity, lateral and longitudinal profiles of solid volume fraction and annulus thickness are in reasonable agreement with experimental results.; The kinetic theory of granular flow (KTGF) is modified to fit the Einstein's equation for effective viscosity of dilute flow. A pseudo-fluid approach based on this modified KTGF is used to simulate the dynamic formation and dissipation of clusters in a circulating fluidized bed riser. The agglomeration of particles reduces slip velocity within particle clusters, and hence results in two reverse trends: discrete particles are lifted by air while particle clusters fall down along the wall. The dynamic equilibrium of these two types of motion leads to the characteristic sigmoid profile of solid concentration along the longitudinal direction. The predicted solid velocity, lateral and longitudinal profiles of solid volume fraction and annulus thickness are in reasonable agreement with experimental results.
KeywordEulerian Simulation Gas-solid Kinetic Theory Cluster Circulating Fluidized Bed
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
URL查看原文
Indexed BySCI
Language英语
WOS KeywordKINETIC-THEORY ; FLOW PATTERNS ; BED ; MODEL ; HYDRODYNAMICS ; COMPUTATION ; PARTICLES ; REACTORS
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000174602500011
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5653
Collection研究所(批量导入)
AffiliationChinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Wang, W,Li, YC. Pseudo-fluid simulation of transient behaviors in a CFB riser[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2002,10(1):77-83.
APA Wang, W,&Li, YC.(2002).Pseudo-fluid simulation of transient behaviors in a CFB riser.CHINESE JOURNAL OF CHEMICAL ENGINEERING,10(1),77-83.
MLA Wang, W,et al."Pseudo-fluid simulation of transient behaviors in a CFB riser".CHINESE JOURNAL OF CHEMICAL ENGINEERING 10.1(2002):77-83.
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