| 非极性流体在微通道内的阻力特性分析 |
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| 引用本文： | 刘磊,钟主海,樊辉青.非极性流体在微通道内的阻力特性分析[J].润滑与密封,2011(8). |
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| 作者姓名： | 刘磊 钟主海 樊辉青 |
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| 作者单位： | 西安交通大学动力工程多相流国家重点实验室; |
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| 摘 要： | 研究非极性流体在微通道内的流动特性。采用的微流动实验台通过测量不同极性液体流过矩形截面微通道中流量与压力,分析了不同极性流体的阻力特性。结果表明:对分子量较小的极性液体,微通道内流量-压差关系符合Hagen-Poiseuille定律,连续介质模型仍适用于微米尺度微通道;对分子量较大的非极性液体,常规理论在预测微通道内流量-压差、摩擦阻力系数-雷诺数关系时存在较大误差,须进行修正。
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| 关 键 词： | 不确定度 摩擦阻力系数 相对粗糙度 |
Analysis on Resistance Characteristics of Non-polar Liquids in Microchannels |
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| Liu Lei Zhong Zhuhai Fan Huiqing.Analysis on Resistance Characteristics of Non-polar Liquids in Microchannels[J].Lubrication Engineering,2011(8). |
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| Authors: | Liu Lei Zhong Zhuhai Fan Huiqing |
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| Affiliation: | Liu Lei Zhong Zhuhai Fan Huiqing(State Key Laboratory of Multiphase Flow in Power Engineering,Xi' an Jiaotong University,Xi' an Shaanxi 710049,China) |
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| Abstract: | Flow characteristics of non-polar liquids in microchannels was investigated.Microfluidics experimental platform was used in measuring the flow rate at the corresponding pressure in rectangular microchannels,and the resistance characteristics of liquids with different polar were analyzed.The experimental results show that the relation of flow rate versus pressure difference meets the principle of Hagen-Poiseuille well while the media is polar liquid with minor molecular weight,and continuous medium hypothesi... |
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| Keywords: | uncertainty friction factor relative roughness |
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