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Simulation of the clustering phenomenon in a fast fluidized bed: The importance of drag correlation
Alternative TitleChin. J. Chem. Eng.
Wang, W; Li, TC
2004-06-01
Source PublicationCHINESE JOURNAL OF CHEMICAL ENGINEERING
ISSN1004-9541
Volume12Issue:3Pages:335-341
AbstractDrag force is a key parameter in the numerical modeling of gas-particle flow in circulating fluidized beds. The reliability of current drag force correlations over the regime of fast fluidization has, however, not been thoroughly investigated. In this article, a drag force correlation accounting for the clustering effects for Geldart A particles is used to simulate the behaviors typical of fast fluidization, including dynamic evolution of clusters as well as time- averaged axial and lateral voidage profiles. Diverse images of clusters are captured and the time-averaged profiles of voidage are shown to be in quantitative agreement with the present empirical correlation. The results based on different constitutive correlations of drag force show the importance of the choice of drag force in modeling fast-fluidized beds. This drag force correlation, based on a simple averaging assumption, could give some basic insights about the magnitude of the drag reduction.; Drag force is a key parameter in the numerical modeling of gas-particle flow in circulating fluidized beds. The reliability of current drag force correlations over the regime of fast fluidization has, however, not been thoroughly investigated. In this article, a drag force correlation accounting for the clustering effects for Geldart A particles is used to simulate the behaviors typical of fast fluidization, including dynamic evolution of clusters as well as time- averaged axial and lateral voidage profiles. Diverse images of clusters are captured and the time-averaged profiles of voidage are shown to be in quantitative agreement with the present empirical correlation. The results based on different constitutive correlations of drag force show the importance of the choice of drag force in modeling fast-fluidized beds. This drag force correlation, based on a simple averaging assumption, could give some basic insights about the magnitude of the drag reduction.
KeywordDrag Force Kinetic Theory Granular Materials Fast Fluidization Multiphase Flow Simulation
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
URL查看原文
Indexed BySCI
Language英语
WOS KeywordNUMERICAL-SIMULATION ; MESOSCALE STRUCTURES ; KINETIC-THEORY ; FLOW PATTERNS ; MODEL ; COEFFICIENT ; REACTORS ; RISER
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000222542400004
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5018
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, TC. Simulation of the clustering phenomenon in a fast fluidized bed: The importance of drag correlation[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2004,12(3):335-341.
APA Wang, W,&Li, TC.(2004).Simulation of the clustering phenomenon in a fast fluidized bed: The importance of drag correlation.CHINESE JOURNAL OF CHEMICAL ENGINEERING,12(3),335-341.
MLA Wang, W,et al."Simulation of the clustering phenomenon in a fast fluidized bed: The importance of drag correlation".CHINESE JOURNAL OF CHEMICAL ENGINEERING 12.3(2004):335-341.
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