Slug bubble deformation and its influence on bubble breakup dynamics in microchannel

doi:10.1016/j.cjche.2022.06.016

中国化学工程学报 ›› 2022, Vol. 50 ›› Issue (10): 66-74.DOI: 10.1016/j.cjche.2022.06.016

• Fluid Dynamics and Transport Phenomena • 上一篇下一篇

Slug bubble deformation and its influence on bubble breakup dynamics in microchannel

Yingjie Fei¹, Chunying Zhu¹, Taotao Fu¹, Xiqun Gao², Youguang Ma¹

1 State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China;
2 Yifang Industry Corporation, Liaoyang Petrochemical Fiber Company, Liaoyang 111003, China

收稿日期:2022-03-19 修回日期:2022-06-17 出版日期:2022-10-28 发布日期:2023-01-04
通讯作者: Chunying Zhu,E-mail:zhchy971@tju.edu;Youguang Ma,E-mail:ygma@tju.edu.cn
基金资助:
This article is specially published for commemorating my esteemed supervisor, Academician Yu Guocong (K.T. Yu) for his 100th birthday! I would like to deeply appreciate him for his outstanding contribution to the Journal of Chinese Journal of Chemical Engineering as one of the founders and for his extraordinary achievements in promoting the development of chemical science and technology in China.

Slug bubble deformation and its influence on bubble breakup dynamics in microchannel

Yingjie Fei¹, Chunying Zhu¹, Taotao Fu¹, Xiqun Gao², Youguang Ma¹

1 State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China;
2 Yifang Industry Corporation, Liaoyang Petrochemical Fiber Company, Liaoyang 111003, China

Received:2022-03-19 Revised:2022-06-17 Online:2022-10-28 Published:2023-01-04
Contact: Chunying Zhu,E-mail:zhchy971@tju.edu;Youguang Ma,E-mail:ygma@tju.edu.cn
Supported by:
This article is specially published for commemorating my esteemed supervisor, Academician Yu Guocong (K.T. Yu) for his 100th birthday! I would like to deeply appreciate him for his outstanding contribution to the Journal of Chinese Journal of Chemical Engineering as one of the founders and for his extraordinary achievements in promoting the development of chemical science and technology in China.

摘要/Abstract

摘要： The deformation of moving slug bubbles and its influence on the bubble breakup dynamics in microchannel were studied. Three bubble morphologies were found in the experiment: slug, dumbbell and grenade shapes. The viscosity effect of continuous phase aggravates the velocity difference between the fluid near the wall and the bubble, resulting in that the continuous phase near the bubble head flows towards and squeezes the bubble tail, which causes the deformation of bubbles. Moreover, the experimental results show that the deformation of bubbles could significantly prolong the bubble breakup period at the downstream Y-junction. There exists the critical capillary number Ca_Cr for the asymmetric breakup of grenade bubbles, Ca_Cr increases with the rise of flow rate and viscosity of the continuous phase.

关键词: Slug bubble, Microchannel, Bubble deformation, Bubble breakup

Abstract: The deformation of moving slug bubbles and its influence on the bubble breakup dynamics in microchannel were studied. Three bubble morphologies were found in the experiment: slug, dumbbell and grenade shapes. The viscosity effect of continuous phase aggravates the velocity difference between the fluid near the wall and the bubble, resulting in that the continuous phase near the bubble head flows towards and squeezes the bubble tail, which causes the deformation of bubbles. Moreover, the experimental results show that the deformation of bubbles could significantly prolong the bubble breakup period at the downstream Y-junction. There exists the critical capillary number Ca_Cr for the asymmetric breakup of grenade bubbles, Ca_Cr increases with the rise of flow rate and viscosity of the continuous phase.

Key words: Slug bubble, Microchannel, Bubble deformation, Bubble breakup

Yingjie Fei, Chunying Zhu, Taotao Fu, Xiqun Gao, Youguang Ma. Slug bubble deformation and its influence on bubble breakup dynamics in microchannel[J]. 中国化学工程学报, 2022, 50(10): 66-74.

Yingjie Fei, Chunying Zhu, Taotao Fu, Xiqun Gao, Youguang Ma. Slug bubble deformation and its influence on bubble breakup dynamics in microchannel[J]. Chinese Journal of Chemical Engineering, 2022, 50(10): 66-74.

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Slug bubble deformation and its influence on bubble breakup dynamics in microchannel

Slug bubble deformation and its influence on bubble breakup dynamics in microchannel

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