An experimental study of air-water Taylor flow and mass transfer inside square microchannels
文献类型：期刊论文
| 作者 | Yue, Jun1,2; Luo, Lingai1; Gonthier, Yves1; Chen, Guangwen2; Yuan, Quan2 |
| 刊名 | chemical engineering science
 |
| 出版日期 | 2009-08-15 |
| 卷号 | 64期号:16页码:3697-3708 |
| 关键词 | Microchannel Taylor flow Bubble Hydrodynamics Mass transfer Multiphase reactors |
| 英文摘要 | flow and mass transfer properties under air-water taylor flow have been investigated in two square microchannels with hydraulic diameters of 400 and 200 mu m. experimental data on taylor bubble velocity, pressure drop and liquid side volumetric mass transfer coefficient (k(l)a) have been presented. it was shown that the measured taylor bubble velocity in square microchannels could be well interpreted based upon an approximate measurement of the liquid film profile therein. then, the obtained two-phase frictional pressure drop values in both microchannels were found to be significantly higher than the predictions of the correlation proposed by kreutzer et al. [2005b. inertial and interfacial effects on pressure drop of taylor flow in capillaries. a.i.ch.e. journal 51, 2428-2440] when the liquid slug was very short, which can be explained by the inadequacy of their correlation to describe the excess pressure drop caused by the strong inner circulation in such short liquid slugs. an appropriate modification has been made to this correlation in order to improve its applicability in microchannels. finally, the experimental (k(l)a) values in the microchannel with hydraulic diameter of 400 mu m were found to be in poor agreement with those predicted by the existing correlations proposed for capillaries with diameters of several millimeters. the observed deviation was mainly due to the fact that mass transfer experiments in this microchannel actually corresponded to the case of short film contact time and rather poor mixing between the liquid film and the liquid slug, which was not in accordance with mass transfer assumptions associated with these correlations. a new empirical correlation has been proposed to describe mass transfer data in this microchannel. (c) 2009 elsevier ltd. all rights reserved. |
| WOS标题词 | science & technology ; technology |
| 类目[WOS] | engineering, chemical |
| 研究领域[WOS] | engineering |
| 关键词[WOS] | liquid 2-phase flow ; bubble-train flow ; microfabricated multiphase reactors ; selective direct fluorination ; gas-liquid ; pressure-drop ; rectangular microchannels ; long bubbles ; polygonal capillaries ; elemental fluorine |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000271298600015 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/141441]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Univ Savoie, LOCIE, F-73376 Savoie Technolac, Bourget Lac, France 2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yue, Jun,Luo, Lingai,Gonthier, Yves,et al. An experimental study of air-water Taylor flow and mass transfer inside square microchannels[J]. chemical engineering science,2009,64(16):3697-3708. |
| APA | Yue, Jun,Luo, Lingai,Gonthier, Yves,Chen, Guangwen,&Yuan, Quan.(2009).An experimental study of air-water Taylor flow and mass transfer inside square microchannels.chemical engineering science,64(16),3697-3708. |
| MLA | Yue, Jun,et al."An experimental study of air-water Taylor flow and mass transfer inside square microchannels".chemical engineering science 64.16(2009):3697-3708. |
入库方式： OAI收割
来源：大连化学物理研究所
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