Gas/liquid/liquid three-phase flow patterns and bubble/droplet size laws in a double T-junction microchannel

被引：32

作者：

Wang, Kai ^{[1
]}

Qin, Kang ^{[1
]}

Lu, Yangcheng ^{[1
]}

Luo, Guangsheng ^{[1
]}

Wang, Tao ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Chem Engn, State Key Lab Chem Engn, Beijing 100084, Peoples R China

来源：

AICHE JOURNAL | 2015年 / 61卷 / 05期

基金：

中国国家自然科学基金;

关键词：

double T-junction microchannel; gas; liquid; liquid flow; flow pattern; size law; CONTROLLABLE MICROFLUIDIC PRODUCTION; DOUBLE EMULSIONS; SEGMENTED FLOW; LIQUID FLOWS; DEVICES; DROPLETS; MICROREACTOR; TRANSITION; EXTRACTION; BUBBLES;

D O I：

10.1002/aic.14758

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The double T-junction microchannel is a classical microstructured chemical device used to generate gas/liquid/liquid three-phase microflows. An experimental study that focused on the three-phase flow phenomena and bubble/droplet generation rules in a double T-junction microchannel was introduced. Based on the published knowledge of gas/liquid and liquid/liquid two-phase microflows, new flow patterns were carefully defined: bubble cutting flow, spontaneous break-up and bubble cutting coupling flow, and bubble/droplet alternate break-up flow. According to the classical correlations of bubble and droplet volumes and their generation frequency ratio, the operating criteria for creating different three-phase flow patterns were established and a model for the dimensionless average bubble and droplet volumes in the three-phase microflows was developed. These various three-phase microflows have great application potential in material science and flow chemistry synthesis. (c) 2015 American Institute of Chemical Engineers AIChE J, 61: 1722-1734, 2015

引用

页码：1722 / 1734

页数：13

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