Experimental Study and Numerical Simulation of Bubbling Fluidized Beds with Fine Particles in Two and Three Dimensions

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	Experimental Study and Numerical Simulation of Bubbling Fluidized Beds with Fine Particles in Two and Three Dimensions
	Zou, Zheng 1,2; Li, Hongzhong 1; Zhu, Qingshan 1; Wang, Yingce 1,2
刊名	INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
	2013-08-21
卷号	52 期号:33 页码:11302-11312
英文摘要	The present study provides a deeply analysis of the flow behavior of bubbling fluidized beds with fine particles in two- (2D) and three-dimensional (3D) conditions, and computational fluid dynamics (CFD) simulations of agglomerates fluidization are carried out coupled with the modified agglomerate-force balance model, correspondingly. The experimental results indicate that the fluidized bed can be divided into bottom unfluidized, middle ascending fluidized, and upper descending back-mixing sections. The local solids volume fraction value ranges from 0.11 to 0.30, which depends on the interaction between bubble phase (epsilon(s) = 0-0.04) and emulsion phase (epsilon(s) = 0.26-0.30). The wall effect appears to be weakened, and the cohesive particles fluidize more uniformly in 3D fluidized beds. The simulations are in reasonable agreement with the experimental findings. However, at the top region of the bed the predicted solids holdup slightly deviates from experimental measurement. The vector plots of computed agglomerates velocity support the central and wall falling down-both sides rising up flow pattern of solids, two core-annular flows exist in the bed, which can be also observed experimentally.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Chemical
研究领域[WOS]	Engineering
关键词[WOS]	COHESIVE PARTICLES ; BEHAVIOR ; DIAMETER ; POWDERS ; SIZE
收录类别	SCI
语种	英语
WOS记录号	WOS:000323536000009
公开日期	2015-05-27
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/13510]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zou, Zheng,Li, Hongzhong,Zhu, Qingshan,et al. Experimental Study and Numerical Simulation of Bubbling Fluidized Beds with Fine Particles in Two and Three Dimensions[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2013,52(33):11302-11312.
APA	Zou, Zheng,Li, Hongzhong,Zhu, Qingshan,&Wang, Yingce.(2013).Experimental Study and Numerical Simulation of Bubbling Fluidized Beds with Fine Particles in Two and Three Dimensions.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,52(33),11302-11312.
MLA	Zou, Zheng,et al."Experimental Study and Numerical Simulation of Bubbling Fluidized Beds with Fine Particles in Two and Three Dimensions".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 52.33(2013):11302-11312.