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Flow pattern and break-up of liquid film in single-channel falling film microreactors
Zhang, Haocui1,2; Yue, Jun1; Chen, Guangwe1; Yuan, Quan1; Chen GW(陈光文)
关键词Microchannel Microreactor Microfluidics Falling Film Flow Pattern Minimum Wetting Flow Rate
刊名CHEMICAL ENGINEERING JOURNAL
2010-09-15
DOI10.1016/j.cej.2010.07.045
163期:1-2页:126-132
收录类别SCI
文章类型Article
部门归属903
项目归属903
产权排名1;1
WOS标题词Science & Technology ; Technology
类目[WOS]Engineering, Environmental ; Engineering, Chemical
研究领域[WOS]Engineering
关键词[WOS]CONTACT-ANGLE HYSTERESIS ; VERTICAL SURFACE ; WETTABILITY ; EVAPORATORS ; REACTOR
英文摘要This paper concerns an experimental investigation into the flow pattern transition and break-up mechanism of liquid film in single-channel falling film microreactors. Three major flow patterns were observed to be 'corner rivulet flow', 'falling film flow with dry patches', and 'complete falling film flow'. The critical flow rate associated with the transition between each flow pattern was determined. Hysteresis was found, as the critical flow rate was higher when the flow pattern shifted from 'falling film flow with dry patches' to 'complete falling film flow' than it was when the flow pattern shifted in the opposite direction. There existed a minimum wetting flow rate (MWF) in order to the complete falling film flow pattern to be present. MWF was observed to increase with the width or depth of microchannel and could not be well predicted by traditional falling film correlations. Based on the obtained data, an empirical correlation has been proposed for the prediction of MWF in falling film microreactors, where the influence of fluid physical properties and channel dimension is revealed. (C) 2010 Elsevier B.V. All rights reserved.
语种英语
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WOS记录号WOS:000282391200017
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被引频次:10[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/103249
专题中国科学院大连化学物理研究所
通讯作者Chen GW(陈光文)
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
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Zhang, Haocui,Yue, Jun,Chen, Guangwe,et al. Flow pattern and break-up of liquid film in single-channel falling film microreactors[J]. CHEMICAL ENGINEERING JOURNAL,2010,163(1-2):126-132.
APA Zhang, Haocui,Yue, Jun,Chen, Guangwe,Yuan, Quan,&陈光文.(2010).Flow pattern and break-up of liquid film in single-channel falling film microreactors.CHEMICAL ENGINEERING JOURNAL,163(1-2),126-132.
MLA Zhang, Haocui,et al."Flow pattern and break-up of liquid film in single-channel falling film microreactors".CHEMICAL ENGINEERING JOURNAL 163.1-2(2010):126-132.
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