文献类型：期刊文献

英文题名：Experimental study on bubble behavior and dynamic mass transfer characteristics of Taylor flow in a rectangular microchannel based on the absorbtion process of CO2/MEA

作者：Sun, Xiaozhe Dang, Chao Shen, Yida Liu, Ye Ding, Yong Chen, Qi

第一作者：Sun, Xiaozhe

通信作者：Dang, C[1]

机构：[1]Beijing Jiaotong Univ, Inst Thermal Engn, Sch Mech Elect & Control Engn, Beijing Key Lab Flow & Heat Transfer Phase Changin, Beijing 100044, Peoples R China;[2]Guizhou Inst Technol, Sch Aerosp Engn, Guiyang 550025, Peoples R China

第一机构：Beijing Jiaotong Univ, Inst Thermal Engn, Sch Mech Elect & Control Engn, Beijing Key Lab Flow & Heat Transfer Phase Changin, Beijing 100044, Peoples R China

通信机构：corresponding author), Beijing Jiaotong Univ, Inst Thermal Engn, Sch Mech Elect & Control Engn, Beijing Key Lab Flow & Heat Transfer Phase Changin, Beijing 100044, Peoples R China.

年份：2026

卷号：176

期号：P2

外文期刊名：INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER

收录：;EI(收录号：20261920663894);WOS:【SCI-EXPANDED(收录号:WOS:001765942200001)】；

基金：This research was supported by the National Natural Science Foundation of China (No. 52476051) and Guizhou Provincial Major Scientific and Technological Program (XKBF (2025) 031) .

语种：英文

外文关键词：Taylor bubble; Microchannel; Local mass transfer coefficient; Phase interface characteristics; Spatio-temporal evolution law

摘要：A systematic investigation was conducted on the spatiotemporal dynamic mass transfer characteristics and action mechanism of Taylor flow in microchannels, with a focus on Taylor bubbles. A self-developed system (comprising reactant supply, testing, data acquisition, and image capture modules) was adopted in the experiments, and the mass transfer process was analyzed from three dimensions: bubble formation, spatial evolution, and temporal evolution. The main findings included: the superficial gas-liquid velocity ratio (epsilon) played a key role in regulating bubble morphology- the higher the epsilon value, the greater the bubble generation frequency and initial length; the local liquid-side mass transfer coefficient (KLa) decreased along the channel axis, and multiple stable phasse/rebound growth phases of mass transfer coefficient occurred under high epsilon conditions, while an increase in liquid flow rate transformed the mass transfer mode from "stable phases of mass transfer coefficient" to "rebound growth phases of mass transfer coefficient"; under constant gas pressure, liquid pressure only affected the initial bubble length and had a negligible impact on KLa. A Sh prediction formula was also proposed in the study. This research provides an important theoretical basis for the development and application of microchannel reactors.