期刊
CHINESE JOURNAL OF CHEMICAL ENGINEERING
卷 46, 期 -, 页码 214-222出版社
CHEMICAL INDUSTRY PRESS CO LTD
DOI: 10.1016/j.cjche.2021.06.002
关键词
Microchannels; Absorption; Bubble; Formation dynamics
资金
- National Natural Science Foundation of China [22008220, 21776200, 51973196]
- Natural Science Foundation of Zhejiang Province [LQ21B060009]
- Key Research and Development Program of Zhejiang Province [2020C01010]
This study investigates the effect of chemical absorption on the dynamic characteristics and initial length of Taylor bubbles. It reveals that chemical absorption enhances the bubble formation dynamics and initial length at relatively high chemical reaction rates and long formation time.
This study focuses on the effect of chemical absorption on the formation dynamic characteristics and initial length of Taylor bubbles. The temporal evolutions of neck width and length of gaseous thread and initial length with and without chemical absorption were investigated with the Capillary number and Hatta number between 0.0010-0.0073 and 1.8-5.8 respectively. The squeezing regime with typical three stages, expansion, squeezing and pinch off is observed for both two processes. Compared with the non absorption process, the increase of formation time in the chemical absorption process arises mainly from the expansion stage, and the decrease of initial length is from the necking stage. In addition, the temporal length evolution satisfies the power-law scale with the same exponent but a smaller pre-exponential factor. The correlations of neck width for stage transition and initial length with Hatta number demonstrate the enhancement effect of chemical absorption on bubble formation dynamics and initial length at relatively high chemical reaction rates and long formation time. This study provides insight into the bubble formation mechanism and helps to regulate the bubble initial size with chemical absorption. (c) 2021 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据