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首页> 外文期刊>International Journal of Heat and Mass Transfer >Two immiscible layers of electro-osmotic driven flow with a layer of conducting non-Newtonian fluid
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Two immiscible layers of electro-osmotic driven flow with a layer of conducting non-Newtonian fluid

机译：两层不可渗透的电渗流与一层传导非牛顿流体

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摘要

Most of the bio-fluids are non-Newtonian fluid with complex flow behavior, for instances the human blood and DNA sample are shear thinning fluids. The transportation of such fluids shares wide applications in microfluidics. The mathematical model for the two immiscible layers electro-osmotic driven flow in the parallel microchannel is proposed in this paper. One layer is conducting non-Newtonian power-law fluid driven by electro-osmotic force. The other layer is non-conducting Newtonian layer driven by interface shear. The effects of Debye-Huckel parameter κh_1, interfacial zeta potential ψ_1, the Newtonian viscosity μ_2, the non-Newtonian fluid consistency coefficient m & flow behavior index n are discussed. The complex flow behavior, namely fluid consistent coefficient and flow behavior index, play important roles upon the velocity distributions. The shear thinning effect is also analyzed. The results show that the shear thinning fluid is not only ideal for direct electro-osmotic driving but also for hybrid driving.
机译：大多数生物流体是具有复杂流动行为的非牛顿流体，例如人体血液和DNA样品是剪切稀化流体。此类流体的运输在微流体领域具有广泛的应用。提出了在平行微通道中两层不互溶层电渗流的数学模型。一层传导由电渗透力驱动的非牛顿幂律流体。另一层是界面剪切驱动的非导电牛顿层。讨论了Debye-Huckel参数κh_1，界面ζ电势ψ_1，牛顿粘度μ_2，非牛顿流体稠度系数m和流动行为指数n的影响。复杂的流动行为，即流体一致系数和流动行为指数，对速度分布起着重要作用。还分析了剪切稀化效果。结果表明，剪切稀化流体不仅是直接电渗驱动的理想选择，而且还是混合动力驱动的理想选择。

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  • 作者

    Yi Huang; Haiwang Li; Teck Neng Wong;

  • 作者单位

    School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore;

    School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore,National Key Lab. of Science and Technology on Aero-Engines, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;

    School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore;

  • 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
  • 中图分类
  • 关键词

    Electro-osmotic pumping; Two immiscible layers; Power-law; Shear thinning;

    机译：电渗泵浦;两层互不相溶的层;幂律;剪切稀化;

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