一种挡板结构被动式微混合器的设计与仿真  

Design and Simulation of a Passive Micromixer with Baffle Structure

作　　者：刘洋[1,2] 毛海央[2] 范文兵[1] 杨潇楠[1] 黄成军[3] 程洁[3] 王玮冰 Liu Yang,Mao Haiyang,Fan Wenbing,Yang Xiaonan,Huang Chengjun,Cheng Jie,Wang Weibing(1. School of Information Engineering, Zhengzhou University, Zhengzhou 450001, China; 2. a. Smart Sensing R＆D Center, b. R＆D Center of Healthcare Electronics, Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, Chin)

机构地区：[1]郑州大学信息工程学院,郑州450001 [2]中国科学院微电子研究所智能感知研发中心,北京100029 [3]中国科学院微电子研究所健康电子研发中心,北京100029

出　　处：《微纳电子技术》2018年第4期258-264,共7页Micronanoelectronic Technology

基　　金：国家自然科学基金资助项目(61771467,61335008);国家高技术研究发展计划(863计划)资助项目(2015AA042605);国防科技创新项目(17-163-12-ZT-006-002-13)

摘　　要：基于在微通道内设置障碍物可以提高混合效率的方法,以T型方波通道微混合器为基础,设计了一种新型的、具有挡板结构的被动式微混合器,并采用有限元方法建立了仿真模型,分析比较了T型直通道微混合器、T型方波通道微混合器和具有挡板结构的T型方波通道微混合器在不同雷诺数（Re）下器件内流体的流动特性和混合效率。研究结果表明,具有挡板结构的T型方波通道微混合器在挡板阻塞比为1/4时具备最优的综合性能,也即在较宽Re值范围（5～60）内可实现流体的快速、高效混合,混合效率高于95%。Based on the method of setting obstacles in the microchannel to improve mixing efficiency,a new type of passive micromixer with baffle structure based on a T-type square-wave channel micromixer was designed and the simulation model was established by the finite element method.The flow characteristics and mixing efficiencies of the fluids of the T-type straight channel micromixer,T-type square-wave channel micromixer and T-type square-wave channel micromixer with baffle structure were analyzed and compared at different Reynolds numbers（Re）.The research results show that the T-type square-wave channel micromixer with baffle structure has the best comprehensive performance at the baffle blockage ratio of 1/4,in which case,the fluids can be quickly and efficiently mixed in a wide range of Re values（5-60）with a mixing efficiency of greater than 95%.

关 键 词：微混合器 混合效率 挡板 雷诺数 有限元方法 

分 类 号：O35[理学—流体力学] TH703[理学—力学]