首页|Experimental and numerical investigations on micromixing performance of multi-orifice cross-flow jet mixers

Experimental and numerical investigations on micromixing performance of multi-orifice cross-flow jet mixers

扫码查看
原文链接
  • 万方数据
  • 维普
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.

Multi-orifice cross-flow jet mixerMicromixing performanceFinite-rate/modified eddy dissipation modelComputational fluid dynamicsVillermaux/Dushman reaction

Hang Yang、Zhaojin Lu、Likun Ma、Wei Yin、Bingjie Wang、Zhishan Bai、Xiaoyong Yang

展开 >

School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China

Shanghai Sailing Program,ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaState Key Laboratory of Chemical EngineeringNational Science Fund for Distinguished Young Scholars of China

21YF14095002230810022308105SKL-ChE-23Z0122225804

2024

10.1016/j.cjche.2024.03.007

中国化学工程学报(英文版)
中国化工学会

中国化学工程学报(英文版)

CSTPCDEI
影响因子：0.818
ISSN：1004-9541
年,卷(期)：2024.70(6)
  • 2