A numerical analysis of the effect of bubble-induced liquid flow on mass transfer in bubble plumes
The utilization of microbubbles for higher mass transfer efficiency in compact reactors has become popular recently. Since the behavior of the microbubbles may differ widely from simple estimations with the effect of bubble-induced liquid flow, this effect on mass transfer in microbubble plumes has been analyzed numerically in the present work. A two-way coupling Eulerian-Lagrangian approach is used to simulate oxygen bubble plumes with initial bubble diameters from 100 um to 1 mm and a maximum local void fraction of less than 2％ in compact rectangular tanks. The simulations illustrate that the effect of bubble-induced liquid velocity on the residence time of microbubbles increases with the decrease of initial bubble diameters, and also increases with the reduction of initial water depth.
Microbubbles Bubble plume Mass transfer Eulerian-Lagrangian approach
X.B.Gong Shu Takagi Yoichiro Matsumoto
Department of Engineering Mechanics, NAOCE, Shanghai Jiaotong University, China Department of Mechanical Engineering, The University of Tokyo, Japan
国际会议
西安
英文
729-734
2009-07-11（万方平台首次上网日期，不代表论文的发表时间）