Mass/Heat Transfer from a Neutrally Buoyant Sphere in Simple Shear Flow at Finite Reynolds and Peclet Numbers

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	Mass/Heat Transfer from a Neutrally Buoyant Sphere in Simple Shear Flow at Finite Reynolds and Peclet Numbers
	Yang, Chao 1,2; Zhang, Jingsheng 1; Koch, Donald L.2; Yin, Xiaolong 3
刊名	AICHE JOURNAL
	2011-06-01
卷号	57 期号:6 页码:1419-1433
关键词	shear flow mass transfer numerical simulation boundary layer analysis sphere
ISSN号	0001-1541
通讯作者	Yang, C
英文摘要	Theoretical analyses of mass/heat transfer from a neutrally buoyant particle in simple shear flow indicate that mass/heat must diffuse across a region of closed streamlines of finite thickness at zero Reynolds number, whereas spiraling streamlines allow the formation of a thin mass transfer boundary layer at small but non-zero Reynolds numbers (Subramanian and Koch, Phys Rev Lett. 2006; 96: 134503; Subramanian and Koch, Phys Fluids. 2006; 18: 073302). This article presents the first numerical results for mass/heat transfer at finite Reynolds and Peclet numbers. The simulations indicate that fluid particles in the flow-gradient plane spiral away from the particle for Reynolds numbers smaller than about 2.5 while they spiral toward the particle for higher Reynolds numbers. Solutions of the Navier-Stokes equations coupled with a boundary layer analysis of mass transfer yield predictions for the rate of mass transfer at asymptotically large Peclet numbers and Reynolds numbers up to 10. Simulations of mass transfer for zero Reynolds number and finite Peclet numbers confirm Acrivos' (Acrivos, J Fluid Mech. 1971;46:233-240) prediction that the Nusselt number approaches a finite value with increasing Peclet number. Simulations at finite Reynolds numbers and Peclet numbers up to 10,000 confirm the theoretical predictions for the concentration gradient at the particle surface at angular positions away from the flow-gradient plane. However, the wake near the flow-gradient plane remains too large at this Peclet number to yield a quantitative agreement of the overall rate of mass transfer with the theory for asymptotically large Peclet number. (C) 2010 American Institute of Chemical Engineers AIChE J, 57: 1419-1433, 2011
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Chemical
研究领域[WOS]	Engineering
关键词[WOS]	HEAT-TRANSFER ; MASS-TRANSFER ; SOLID SPHERE ; STEADY ; SIMULATION ; TRANSPORT ; BUBBLES ; MOTION ; FIELD ; TUBE
收录类别	SCI
语种	英语
WOS记录号	WOS:000290616500006
公开日期	2013-11-05
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/4879]
专题	过程工程研究所_湿法冶金清洁生产技术国家工程实验室
作者单位	1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Cornell Univ, Sch Chem & Biomol Engn, Ithaca, NY 14853 USA 3.Colorado Sch Mines, Dept Petr Engn, Golden, CO 80402 USA
推荐引用方式 GB/T 7714	Yang, Chao,Zhang, Jingsheng,Koch, Donald L.,et al. Mass/Heat Transfer from a Neutrally Buoyant Sphere in Simple Shear Flow at Finite Reynolds and Peclet Numbers[J]. AICHE JOURNAL,2011,57(6):1419-1433.
APA	Yang, Chao,Zhang, Jingsheng,Koch, Donald L.,&Yin, Xiaolong.(2011).Mass/Heat Transfer from a Neutrally Buoyant Sphere in Simple Shear Flow at Finite Reynolds and Peclet Numbers.AICHE JOURNAL,57(6),1419-1433.
MLA	Yang, Chao,et al."Mass/Heat Transfer from a Neutrally Buoyant Sphere in Simple Shear Flow at Finite Reynolds and Peclet Numbers".AICHE JOURNAL 57.6(2011):1419-1433.