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题名: Gas-liquid two-phase flow in microchannel at elevated pressure
作者: Zhao, Yuchao1;  Chen, Guangwen1;  Ye, Chunbo1;  Yuan, Quan1
关键词: Microreactor ;  Microstructure ;  Multiphase flow ;  Hydrodynamics ;  Mixing ;  High pressure
刊名: CHEMICAL ENGINEERING SCIENCE
发表日期: 2013-01-14
DOI: 10.1016/j.ces.2012.10.011
卷: 87, 页:122-132
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: The present study deals with pressure effects on the hydrodynamic characteristics of gas-liquid two phases within a T-junction microchannel. The operating pressure is in the range of 0.1 similar to 5.0 MPa. Nitrogen and de-ionized water are selected as the test fluids. The gas Weber numbers vary from 1.37 x 10(-5) to 3.46 at atmospheric pressure and from 1.70 x 10(-3) to 70.32 at elevated pressure, respectively. The liquid Weber numbers are in the range of 3.1 x 10(-3)similar to 4.9. The operating pressure plays an important role in gas-liquid two phases flow. Seven typical flow patterns such as bubbly flow, slug flow, unstable slug flow, parallel flow, slug-annular flow, annular flow, and churn flow are observed. Based on the force analysis of the gas and liquid phase in microchannel, the formation mechanisms of flow patterns are discussed at great length, and the flow pattern maps are divided into five regions using We(Gs) and We(LS) coordinates. These results are beneficial for future investigation to understand gas-liquid two-phase mass transfer and reaction characteristics in microchannel at elevated pressure. (C) 2012 Elsevier Ltd. All rights reserved.
关键词[WOS]: MICROFLUIDIC T-JUNCTION ;  MASS-TRANSFER ;  TAYLOR FLOW ;  MICROSTRUCTURED REACTORS ;  RECTANGULAR MICROCHANNEL ;  MICROREACTOR ;  PATTERNS ;  WATER ;  HYDROGENATION ;  TRANSITION
语种: 英语
WOS记录号: WOS:000314688900011
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/137671
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:
Zhao, Yuchao,Chen, Guangwen,Ye, Chunbo,et al. Gas-liquid two-phase flow in microchannel at elevated pressure[J]. CHEMICAL ENGINEERING SCIENCE,2013,87:122-132.
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