文献类型：期刊文献

英文题名：Experimental and numerical investigations on micromixing performance of multi-orifice cross-flow jet mixers

作者：Yang, Hang[1];Lu, Zhaojin[1];Ma, Likun[1];Yin, Wei[1];Wang, Bingjie[1];Bai, Zhishan[1];Yang, Xiaoyong[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2024

卷号：70

起止页码：63

外文期刊名：CHINESE JOURNAL OF CHEMICAL ENGINEERING

收录：;EI(收录号：20242116115419);WOS:【SCI-EXPANDED(收录号:WOS:001243158000001)】；

基金：We gratefully acknowledge the financial support from the Shanghai Sailing Program, China (Grant No. 21YF1409500) , the National Natural Science Foundation of China (22308100, 22308105) , the State Key Laboratory of Chemical Engineering (SKL-ChE-23Z01) , and the National Science Fund for Distinguished Young Scholars of China (22225804) .

语种：英文

外文关键词：Multi -orifice cross -flow jet mixer; Micromixing performance; Finite-rate/modified eddy dissipation model; Computational fluid dynamics; Villermaux/Dushman reaction

摘要：Multi-orifice cross-flow jet mixers (MOCJMs) are used in various industrial applications due to their excellent mixing efficiency, but few studies have focused on the micromixing performance of MOCJMs. Herein, the flow characteristics and micromixing performance inside the MOCJM were investigated using experiments and computational fluid dynamics (CFD) simulations based on the Villermaux/Dushman system and the finite-rate/modified eddy-dissipation model. The optimal A value was correlated with the characteristic parameters of MOCJMs to develop a CFD calculation method applicable to the study of the micromixing performance of the MOCJMs. Then the micromixing efficiency was evaluated using the segregation index XS, and the effects of operational and geometric parameters such as mixing flow Reynolds number (ReM), flow ratio (RF), total jet area (ST), the number of jet orifices (n), and outlet configuration on the micromixing efficiency were investigated. It was found that the intensive turbulent region generated by interactions between jets, as well as between jets and crossflows, facilitated rapid reactions. XS decreased with increasing ReM and decreasing RF. Furthermore, MOCJMs with lower ST, four jet orifices, and the narrower outlet configuration demonstrated a better micromixing efficiency. This study contributes to a deeper understanding of the micromixing performance of MOCJMs and provides valuable guidance for their design, optimization, and industrial application. (c) 2024 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.