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学科主题: 物理化学
题名: Ideal micromixing performance in packed microchannels
作者: Su, Yuanhai1;  Chen, Guangwen1;  Yuan, Quan1
通讯作者: 陈光文
关键词: Mixing ;  Microchannel ;  Process intensification ;  Fluid mechanics ;  Packed bed ;  Diffusion
刊名: CHEMICAL ENGINEERING SCIENCE
发表日期: 2011-07-01
DOI: 10.1016/j.ces.2011.03.024
卷: 66, 期:13, 页:2912-2919
收录类别: SCI
文章类型: Article
部门归属: 9
项目归属: 903
产权排名: 1,1
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Engineering, Chemical
摘要: Ideal micromixing performance in packed microchannels
研究领域[WOS]: Engineering
英文摘要: In this work, the hydrodynamics and the micromixing characteristics in the packed and non-packed microchannels were studied experimentally at low Reynolds numbers (8-300). The mixing performances in microchannels were observed with high-speed CCD camera, and were evaluated in terms of a segregation index by the Villermaux/Dushman method. The fluid elements were drastically stretched, folded, and sheared with the effects of micro-particles in packed microchannels, resulting in extremely shorter diffusion distance and larger effective interfacial area, and much higher micromixing efficiency compared with those of non-packed microchannels. Under enough packing length and appropriate packing position of micro-particles, the ideal micromixing performance could be obtained in packed microchannels. Furthermore, the micromixing time in packed microchannels was determined based on the incorporation model, and its value was in the range of 0-0.1 ms. (C) 2011 Elsevier Ltd. All rights reserved.
关键词[WOS]: COMPETING REACTION SYSTEM ;  EFFICIENCY ;  MICRO ;  MIXER ;  KINETICS ;  FLOW
语种: 英语
WOS记录号: WOS:000290306800003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/115206
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. Ideal micromixing performance in packed microchannels[J]. CHEMICAL ENGINEERING SCIENCE,2011,66(13):2912-2919.
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