T-型微混合器的优化与仿真  

Optimization and Simulation of T-type Micromixer

作　　者：郑才 段勇强 樊姗 余鹏程 袁野 廖红华 ZHENG Cai;DUAN Yongqiang;FAN Shan;YU Pengcheng;YUAN Ye;LIAO Honghua(School of Information Engineering,Hubei Minzu University,Enshi 445000,China)

机构地区：[1]湖北民族大学信息工程学院,湖北恩施445000

出　　处：《湖北民族大学学报（自然科学版）》2020年第2期171-175,共5页Journal of Hubei Minzu University:Natural Science Edition

基　　金：国家自然科学基金项目(61463014,61263030).

摘　　要：设计了一种内置周期性挡板T-型微混合器,并采用ANSYS软件对其进行建模与仿真.主要针对不同挡板排数、高度、间距、角度、宽度、混合单元数和不同雷洛数对微混合器出口处温度的影响进行了对比分析,并采用田口分析方法,减少试验次数,根据信噪比大小找寻最优混合器结构.仿真结果表明:对于混合效率的影响,W 3(挡板高度)>W 1(挡板宽度)>W 2(相邻挡板水平距离)>θ(挡板角度),双排正向>双排反向>单排>无挡板;对压降的影响,W 3(挡板高度)>θ(挡板角度)>W 1(挡板宽度)>W 2(相邻挡板水平距离),双排正向>双排反向>单排>无挡板;因此选定W 1=60μm;W 2=500μm;W 3=100μm;θ=45°,挡板排数为双排正向,混合单元数4为最优设计参数.该结构在雷洛数达到150时,达到完全混合.A built-in periodic baffle T-type micro-mixer was designed and modeled and simulated by ANSYS software.In this paper,the effects of different baffle rows,heights,spacings,angles,thicknesses,number of mixing units and different Reynolds numbers on the temperature at the outlet of micromixer are compared,and the Taguchi analysis method is used to reduce the number of experiments and find the optimal structure for size according to the signal-to-noise ratio.The simulation results show that for the effect of mixing efficiency,W 3(baffle height)>W 1(baffle width)>W 2(adjacent baffle horizontal distance)>θ(bafffle angle),double row forward>double row reverse>single row>no baffle;influence on pressure drop,W 3(baffle height)>θ(bafffle angle)>W 1(baffle width)>W 2(adjacent baffle horizontal distance),double Positive row>double row reverse>single row>no baffle;therefore,select W 1=60μm;W 2=500μm;W 3=100μm;θ=45°,the number of baffles is double row positive,and the number of mixing units is 4,which is an optimalis design parameter.When the Rero number reaches 150,the structure is completely mixed.

关 键 词：T-型微混合器 田口方法 信噪比 ANSYS 雷洛数 

分 类 号：TP271.3[自动化与计算机技术—检测技术与自动化装置] TH703[自动化与计算机技术—控制科学与工程]