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题名: Pressure drops of single and two-phase flows through T-type microchannel mixers
作者: Yue, J;  Chen, GW;  Yuan, Q
关键词: microchannel ;  micromixer ;  two-phase flow ;  laminar flow ;  pressure drop
刊名: CHEMICAL ENGINEERING JOURNAL
发表日期: 2004-08-15
DOI: 10.1016/j.cej.2004.02.001
卷: 102, 期:1, 页:11-24
收录类别: SCI
文章类型: Article
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
英文摘要: In this paper, preliminary experimental results are presented on pressure drop characteristics of single and two-phase flows through two T-type rectangular microchannel mixers with hydraulic diameters of 528 and 333 mum, respectively. It is shown that both N-2 and water single-phase laminar flows in microchannels, with consideration of experimental uncertainties, are consistent with classic theory, if additional effects, such as entrance effects that will interfere with the interpretation of experimental results, are eliminated by carefully designing the experiments. The obtained pressure drop data of N-2-water two-phase flow in micromixers are analyzed and compared with existing flow pattern-independent models. It is found that the Lockhart-Martinelli method generally underpredicts the frictional pressure drop. Thereafter, a modified correlation of C value in the Chisholm's equation based on linear regression of experimental data is proposed to provide a better prediction of the two-phase frictional pressure drop. Also among the homogeneous flow models investigated, the viscosity correlation of McAdams indicates the best performance in correlating the frictional pressure drop data (mean deviations within +/-20% for two micromixers both). Finally it is suggested that systematic studies are still required to accurately predict two-phase frictional performance in microchannels. (C) 2004 Elsevier B.V. All rights reserved.
关键词[WOS]: TRAPEZOIDAL SILICON MICROCHANNELS ;  LIQUID FLOW ;  RECTANGULAR MICROCHANNELS ;  DIRECT FLUORINATION ;  FRICTION FACTORS ;  CAPILLARY-TUBE ;  VOID FRACTION ;  CHANNELS ;  WATER ;  PREDICTION
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000222552400002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/81015
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, Grp 903, Dalian 116023, Peoples R China

Recommended Citation:
Yue, J,Chen, GW,Yuan, Q. Pressure drops of single and two-phase flows through T-type microchannel mixers[J]. CHEMICAL ENGINEERING JOURNAL,2004,102(1):11-24.
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