Equilibrium morphology of gas-liquid Janus droplets: A numerical analysis of buoyancy effect

doi:10.1016/j.cjche.2018.06.007

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (10): 2121-2126.DOI: 10.1016/j.cjche.2018.06.007

• Chemical Engineering Thermodynamics • 上一篇下一篇

Equilibrium morphology of gas-liquid Janus droplets: A numerical analysis of buoyancy effect

Shaobin Zhang¹, Helen Yan², Yuhao Geng¹, Ke Wang³, Jianhong Xu¹

1 The State Key Lab of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;
2 College of Chemistry, University of California, Berkeley, CA 94728, USA;
3 State Key Laboratory of Industrial Vent Gas Reuse, The Southwest Research & Design Institute of the Chemical Industry, Chengdu 610225, China

收稿日期:2018-03-31 修回日期:2018-05-08 出版日期:2018-10-28 发布日期:2018-11-14
通讯作者: Jianhong Xu,E-mail address:xujianhong@tsinghua.edu.cn
基金资助:
Supported by the National Natural Science Foundation of China (21476121, 21322604), Beijing Natural Science Foundation (2162020) and a Foundation for Tsinghua Independent Research Projects (2014z21026).

Equilibrium morphology of gas-liquid Janus droplets: A numerical analysis of buoyancy effect

Shaobin Zhang¹, Helen Yan², Yuhao Geng¹, Ke Wang³, Jianhong Xu¹

1 The State Key Lab of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;
2 College of Chemistry, University of California, Berkeley, CA 94728, USA;
3 State Key Laboratory of Industrial Vent Gas Reuse, The Southwest Research & Design Institute of the Chemical Industry, Chengdu 610225, China

Received:2018-03-31 Revised:2018-05-08 Online:2018-10-28 Published:2018-11-14
Contact: Jianhong Xu,E-mail address:xujianhong@tsinghua.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China (21476121, 21322604), Beijing Natural Science Foundation (2162020) and a Foundation for Tsinghua Independent Research Projects (2014z21026).

摘要/Abstract

摘要： In this article, a theoretical model for predicting the equilibrium morphology of gas-liquid Janus droplets was built. Based on this model, the effects of bubble radius and volume ratio on morphology change was systematically studied. The increase of bubble radius causes the two parts (bubble and oil drop) in Janus droplets tend to merge while the impact of volume ratio is complicated. When volume ratio increases, these two parts firstly tend to merge, then gradually separate. The accuracy of this model was verified by experimental results.

关键词: Microfluidics, Gas-liquid-liquid emulsion, Janus droplets

Abstract: In this article, a theoretical model for predicting the equilibrium morphology of gas-liquid Janus droplets was built. Based on this model, the effects of bubble radius and volume ratio on morphology change was systematically studied. The increase of bubble radius causes the two parts (bubble and oil drop) in Janus droplets tend to merge while the impact of volume ratio is complicated. When volume ratio increases, these two parts firstly tend to merge, then gradually separate. The accuracy of this model was verified by experimental results.

Key words: Microfluidics, Gas-liquid-liquid emulsion, Janus droplets

Shaobin Zhang, Helen Yan, Yuhao Geng, Ke Wang, Jianhong Xu. Equilibrium morphology of gas-liquid Janus droplets: A numerical analysis of buoyancy effect[J]. Chinese Journal of Chemical Engineering, 2018, 26(10): 2121-2126.

Shaobin Zhang, Helen Yan, Yuhao Geng, Ke Wang, Jianhong Xu. Equilibrium morphology of gas-liquid Janus droplets: A numerical analysis of buoyancy effect[J]. Chin.J.Chem.Eng., 2018, 26(10): 2121-2126.

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Equilibrium morphology of gas-liquid Janus droplets: A numerical analysis of buoyancy effect

Equilibrium morphology of gas-liquid Janus droplets: A numerical analysis of buoyancy effect

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