化学工程2019，Vol.47Issue(3)：50-54,61,6.DOI:10.3969/j.issn.1005-9954.2019.03.010
带扩张-收缩型通道的脉动式微混合器的研究
Study on a pulsatile micromixer with expansion-contraction microchannel
摘要
Abstract
Micromixer is an important component in microfluidic system, and used very frequently in chemical analysis, biomedical science, and so on. A new pulsatile micromixer with expansion-contraction microchannel was designed on the basis of the analysis of the effective approaches to enhance mixing efficiency. Numerical simulations were carried out to reveal the mechanism and regularity of mixing enhancement for various flow parameters and geometrical parameters by software reengineering of Fluent 12.1. Numerical results show that, the most efficient mixing happens when the phase difference is 180°, velocity ratio is 2, and Strouhal number ranging is from 0.2 to 0.4. In addition, the experimental results have good agreements with the numerical results. The results show the validity of numerical model and numerical result.关键词
扩张-收缩型微通道/脉动/主动微混合器/斯特劳哈尔数/数值模拟Key words
expansion-contraction microchannel/pulsatile/active micromixer/Strouhal number/numerical simulation分类
能源科技引用本文复制引用
余宏鹏,史冬冬,王瑞金,朱泽飞..带扩张-收缩型通道的脉动式微混合器的研究[J].化学工程,2019,47(3):50-54,61,6.基金项目
国家自然科学基金资助项目 (11572107) （11572107）
