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题名: Gas-Liquid Mass Transfer in Taylor Flow through Circular Capillaries
作者: Liu, Dingsheng1, 2;  Wang, Shudong1
刊名: INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
发表日期: 2011-02-16
DOI: 10.1021/ie902055p
卷: 50, 期:4, 页:2323-2330
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Engineering, Chemical
研究领域[WOS]: Engineering
英文摘要: Based on computational fluid dynamics (CFD), gas-liquid mass transfer in upward Taylor flow through vertical circular capillaries was studied. To save computational resources and time, the numerical simulations were carried out in a moving frame of reference attached to Taylor bubbles. Three consecutive Taylor bubbles were used to mimic the behavior of Taylor flow in an infinitely long capillary. Steady-state solutions of concentration fields were obtained to describe gas transfer from Taylor bubbles to the liquid phase. The liquid-phase volumetric mass-transfer coefficient, K(L)a, was investigated as a function of various parameters, including the liquid-film length, liquid-slug length, liquid-film thickness, bubble rise velocity, liquid-phase diffusivity, capillary diameter, and gravity. One fitted equation, expressed with three dimensionless numbers, was developed to quantify the relationship between K(L)a and the above parameters. The examples show that the equation could predict K(L)a well. The contributions of the cylindrical bodies and hemispherical caps of Taylor bubbles on the overall mass transfer were studied separately.
关键词[WOS]: BUBBLE-TRAIN FLOW ;  MONOLITH REACTORS ;  SEGMENTED FLOW ;  PERFORMANCE ;  DISPERSION ;  TUBE ;  FILM
语种: 英语
WOS记录号: WOS:000287049700061
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142587
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Liu, Dingsheng,Wang, Shudong. Gas-Liquid Mass Transfer in Taylor Flow through Circular Capillaries[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2011,50(4):2323-2330.
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