| 电磁力诱导二次流对微流体混合效果影响的研究 |
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| 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. |
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| 作者姓名： | 郭春海 谭俊杰 张旺龙 |
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| 作者单位： | 1. 南京理工大学 动力工程学院，江苏 南京 210094;2. 南京理工大学动力工程学院;3. 南京理工大学 动力工程学院; |
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| 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.
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| 关 键 词： | 微流动 电磁力 二次流 Dean涡 |
| 收稿时间： | 2010-08-09 |
THE EFFECT OF SECONDARY FLOW PRODUCED BY ELECTROMAGNETIC FORCES ON THE MICRO-FLUIDIC MIXING |
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| GUO Chunhai
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TAN Junjie
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ZHANG Wanglong.THE EFFECT OF SECONDARY FLOW PRODUCED BY ELECTROMAGNETIC FORCES ON THE MICRO-FLUIDIC MIXING[J].Mechanics and Engineering,2011,33(2):24-29. |
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| Authors: | GUO Chunhai TAN Junjie ZHANG Wanglong |
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| Institution: | GUO Chunhai~(1)) TAN Junjie ZHANG Wanglong (School of Power Engineering NJUST,Nanjing 210094,China) |
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| 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 the fluids 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 ana... |
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| Keywords: | micro flow electromagnetic dynamic secondary flow dean eddy |
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