三种不同结构微混合器的性能分析及压损比较

基金项目:

国家“973”计划资助项目(2011CB710704)

国家自然科学基金资助项目(51176002)

教育部博士学科点专项基金资助项目(20111103110009)

详细信息

Performance Analysis and Pressure Loss Compared for Three Different Structural Micromixers

The Education Ministry Key Laboratory of Enhanced Heat Transfer and Energy Conservation,College of Environmental and Energy Engineering,Beijing University of Technology,Beijing 100124,China

摘要: 对平面内非对称圆形通道、扇形通道及错位通道3种不同结构类型的微混合器的混合特性进行了数值模拟和分析,讨论在不同雷诺数下,通道几何结构参数对微混合器混合强度及通道压力损失的影响.研究结果表明:在雷诺数大于10时,3种类型微混合器混合强度均随雷诺数增大而增大;在不同雷诺数下,错位通道微混合器混合效果最佳,但其压力损失会相对增大.
- 微混合器 /
- 混合强度 /
- 压力损失 /
- 数值模拟
Abstract: Numerical simulations and analyses were presented on mixing performance for three different structural micromixers which include ones with circular sub-channel,fan-shaped sub-channel and dislocation sub-channel,respectively.For different Re,the mixing intensity and pressure loss of micromixer were influenced by the geometric structure parameters of the channels.The results show that when Re is more than 10,the mixing intensity of three different micromixers increases as Re increases.In addition,for different Re,the micromixer with dislocation sub-channel acquires the optimal mixing performance,but the pressure loss increases relatively.
- micromixer /
- mixing intensity /
- pressure loss /
- numerical simulation

[1]	ANSARI M A,KIM K Y.Shape optimization of amicromixer with straggered herringbone groove[J].Chem Eng Sci,2007,62:6687-6695.
[2]	MENGEAUD V,JOSSERAND J,GIRAULT H H.Mixing processes in a zigzag microchannel:finite element simulations and optical study[J].Anal Chem,2002,74:4279-4286.
[3]	LIU R H,STREMLER M A,SHARP K V,et al.Passivemixing in a three-dimensional serpentine microchannel[J].Microelectromech Syst,2000,9(2):190-197.
[4]	ANSARI M A,KIM K Y.Parametric study on mixing oftwo fluids in a three-dimensional serpentine microchannel[J].Chemical Engineering Journal,2009,146:439-448.
[5]	MOUZA A A,PATZA C M,SCHONFELD F.Mixingperformance of a chaotic micromixer[J].Chem Eng ResDes,2008,86:1128-1134.
[6]	ANSARI M A,KIM K Y,ANWAR K.A novel passivemicromixer based on unbalanced splits and collisions offluid streams[J].Micromech Microeng,2010,20(5):055007.
[7]	ANSARI M A,KIM K Y,et al.Mixing performance ofunbalanced split and recombine micromixers with circularand rhombic sub-channels[J].Chemical EngineeringJournal,2010,162(2):760-767.
[8]	夏国栋,李健,吴宏杰,等.非对称分离重组扇形空腔微混合器的混合特性[J].化工学报,2011,62(5):1219-1225.XIA Guo-dong,LI Jian,WU Hong-jie,et al.Mixingperformance of asymmetric split and recombine micromixerwith fan-shaped cavity[J].CIESC Journal,2011,62(5):1219-1225.(in Chinese)