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学科主题: 物理化学
题名: Influence of hydrodynamics on liquid mixing during Taylor flow in a microchannel
作者: Su, Yuanhai1;  Chen, Guangwen1;  Yuan, Quan1
通讯作者: 陈光文
关键词: microchannel ;  Taylor flow ;  mixing ;  diffusion ;  multiphase flow ;  hydrodynamics
刊名: AICHE JOURNAL
发表日期: 2012-06-01
DOI: 10.1002/aic.12698
卷: 58, 期:6, 页:1660-1670
收录类别: SCI
文章类型: Article
部门归属: DNL09
项目归属: DNL903
产权排名: 1,1
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Engineering, Chemical
研究领域[WOS]: Engineering
英文摘要: The miscible liquid-liquid two phases based on Taylor flow in microchannels was investigated by high-speed imaging techniques and Villermaux/Dushman reaction. The mixing based on Taylor flow was much better compared with that without introducing gas in microchannels, even the ideal micromixing performance could be obtained under optimized superficial gas and liquid velocities. In the mixing process based on Taylor flow, the superficial gas and liquid velocities affected the lengths and the velocities of Taylor bubble and liquid slug, and finally the micromixing performance. The formation process of Taylor flow in the inlets, the initial uniform distribution of reactants and the internal circulations in the liquid slug, and the thin liquid films all improved the mixing performance. Furthermore, a modified Peclet number that represented the relative importance of diffusion and convection in the mixing process was proposed for explaining and anticipating micromixing efficiency. (C) 2011 American Institute of Chemical Engineers AIChE J, 58: 16601670, 2012
关键词[WOS]: MASS-TRANSFER ;  2-PHASE FLOW ;  RECTANGULAR MICROCHANNELS ;  MICROMIXING EFFICIENCY ;  MONOLITH REACTORS ;  REACTION SYSTEM ;  SEGMENTED FLOW ;  PART I ;  MICRO ;  MIXER
语种: 英语
WOS记录号: WOS:000303595500002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/117935
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 Natl Lab Clean Energy, Dalian 116023, Peoples R China

Recommended Citation:
Su, Yuanhai,Chen, Guangwen,Yuan, Quan. Influence of hydrodynamics on liquid mixing during Taylor flow in a microchannel[J]. AICHE JOURNAL,2012,58(6):1660-1670.
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