郭春海, 谭俊杰, 张旺龙. 电磁力诱导二次流对微流体混合效果影响的研究[J]. 力学与实践, 2011, 33(2): 24-29. DOI: 10.6052/1000-0879-lxysj2010-318
引用本文: 郭春海, 谭俊杰, 张旺龙. 电磁力诱导二次流对微流体混合效果影响的研究[J]. 力学与实践, 2011, 33(2): 24-29. DOI: 10.6052/1000-0879-lxysj2010-318
THE EFFECT OF SECONDARY FLOW PRODUCED BY ELECTROMAGNETIC FORCES ON THE MICRO-FLUIDIC MIXING[J]. MECHANICS IN ENGINEERING, 2011, 33(2): 24-29. DOI: 10.6052/1000-0879-lxysj2010-318
Citation: THE EFFECT OF SECONDARY FLOW PRODUCED BY ELECTROMAGNETIC FORCES ON THE MICRO-FLUIDIC MIXING[J]. MECHANICS IN ENGINEERING, 2011, 33(2): 24-29. DOI: 10.6052/1000-0879-lxysj2010-318

电磁力诱导二次流对微流体混合效果影响的研究

THE EFFECT OF SECONDARY FLOW PRODUCED BY ELECTROMAGNETIC FORCES ON THE MICRO-FLUIDIC MIXING

  • 摘要: 设计了一种微流道中液体混合的方法, 基于电磁力的作用, 诱导微流道中二次流动发生, 从而产生Dean涡, 使流道中流体出现往复运动及流体界面的弯曲延伸, 使不同流体的接触面积大大地增加, 从而提高混合效率. 对3种结构的工况进行了比较. 建立了微流道混合系统的理论模型并进行了数值模拟,对流体混合过程进行了分析并对混合效率进行了评价. 进行了验证性的试验研究, 对模拟结果与试验结果进行了比较, 结果相吻合.

     

    Abstract: A micro-mixing method is proposed, by which a secondary flow is produced under electromagnetic forces. Then the Dean eddies appear to produce reciprocation flows in the micro channel. The interface of thefluids is bent and stretched. The efficiency of mixing is greatly improved due to a great increase of the contact area between two mixing fluids. The structures of three cases are discussed. A theoretical model of the micro-mixing is built and numerical simulations are carried out. The fluid mixing process is analyzed and the mixing efficiency is evaluated. Experiments are carried for verification.

     

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