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学科主题: 物理化学
题名: Characteristics of slug flow with inertial effects in a rectangular microchannel
作者: Yao Chaoqun1, 2;  Zhao Yuchao1;  Ye Chunbo1, 2;  Dang Minhui1, 2;  Dong Zhengya1, 2;  Chen Guangwen1
通讯作者: 陈光文
关键词: Taylor flow ;  Gas-liquid Carbon dioxide ;  Microreactor ;  Aspect ratio ;  Hydrodynamics
刊名: CHEMICAL ENGINEERING SCIENCE
发表日期: 2013-05-24
DOI: 10.1016/j.ces.2013.03.046
卷: 95, 页:246-256
收录类别: SCI
文章类型: Article
部门归属: DNL09
项目归属: DNL0903
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: Slug flow behavior and characteristics have been studied in a rectangular microchannel with Y-junction. Two simple bubble shape models are proposed to calculate the film thickness, gas hold-up and the specific surface area. The results show a significant effect of inertia on the bubble generation process. The liquid film thickness was greatly thickened by the inertial effect. The main forces on the rupture of the gas bubbles present a shifting from pressure (squeezing regime) to shearing stress and dynamical pressure of the liquid (shearing regime). The transition was found to mainly depend on the liquid velocity. A strong leakage flow of the liquid film around the gas bubbles was suggested as the liquid slug lengths decreased instead when liquid velocity increased. This leakage flow is also the reason of the over-prediction of the bubble velocity based on the stagnant film hypothesis. (c) 2013 Elsevier Ltd. All rights reserved.
关键词[WOS]: LIQUID 2-PHASE FLOW ;  SQUARE CROSS-SECTION ;  BUBBLE-TRAIN FLOW ;  AIR-WATER FLOW ;  TAYLOR FLOW ;  MASS-TRANSFER ;  PRESSURE-DROP ;  VOID FRACTION ;  CHANNEL DIAMETER ;  INTERFACIAL AREA
语种: 英语
WOS记录号: WOS:000318614100026
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/117617
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
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Yao Chaoqun,Zhao Yuchao,Ye Chunbo,et al. Characteristics of slug flow with inertial effects in a rectangular microchannel[J]. CHEMICAL ENGINEERING SCIENCE,2013,95:246-256.
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