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首页> 外文期刊>International Journal of Heat and Mass Transfer >Micro-scale thermo-fluidic transport in two immiscible liquid layers subject to combined electroosmotic and pressure-driven transport
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Micro-scale thermo-fluidic transport in two immiscible liquid layers subject to combined electroosmotic and pressure-driven transport

机译：在两个不混溶的液层中进行电渗流和压力驱动相结合的微型热流体输运

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摘要

A theoretical analysis is presented for fully developed convective heat transfer in two immiscible fluid layers confined within parallel plate microchannels subject to combined effects of axial pressure gradients and imposed electrical fields. Assuming desperate zeta potentials at the interfaces thus formed, closed-form expressions are derived for the velocity and temperature distributions under fully developed conditions, with uniform wall heat flux boundary conditions. For the heat transfer analysis, the viscous dissipation effects are neglected as compared to the Joule heating effects. Results are subsequently obtained for different ranges of the ratios of various electrical properties of the two fluid layers and various relative strengths of the ratios of the electrical fields and the imposed pressure gradients. These results demonstrate the effects of the applied electric fields and pressure gradients, presence of external heat source or sink and interfacial positions on the temperature distributions in the two layers and the corresponding Nusselt numbers.
机译：对于在轴向压力梯度和强加电场共同作用下限制在平行板微通道内的两个不混溶流体层中的完全发展的对流传热，进行了理论分析。假设在如此形成的界面处存在绝望的zeta电位，则可以在壁厚热通量边界条件均匀的条件下，在完全展开的条件下得出速度和温度分布的封闭形式。对于传热分析，与焦耳热效应相比，忽略了粘性耗散效应。随后针对两个流体层的各种电特性的比率的不同范围以及电场和施加的压力梯度的比率的各种相对强度，获得了结果。这些结果证明了施加的电场和压力梯度，外部热源或汇的存在以及界面位置对两层温度分布和相应的努塞尔特数的影响。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2009年第12期|2660-2666|共7页
  • 作者

    Anirban Garai; Suman Chakraborty;

  • 作者单位

    Department of Mechanical Engineering, Indian Institute of Technology, Kharagpur 721 302, India;

    Department of Mechanical Engineering, Indian Institute of Technology, Kharagpur 721 302, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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