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首页> 外文期刊>International Journal of Heat and Mass Transfer >Effects of compressibility and transition to turbulence on flow through microchannels
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Effects of compressibility and transition to turbulence on flow through microchannels

机译：可压缩性和湍流过渡对通过微通道流动的影响

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摘要

A detailed experimental study of flow through long microchannels of hydraulic diameter ranging from 60.5 to 211 urn has been carried out. The internal pressure distribution along the length of the channel has been measured to analyze the local flow behaviour. The effects of compressibility and transition to turbulence occurring in the microchannel flow were investigated in detail. In addition, the resulting flow has been analyzed numerically using a commercially available CFD code, FLUENT. It has been shown that there are no special micro-scale effects, including early transition to turbulence at least in the present range of hydraulic diameters after the significant effects of compressibility are accounted appropriately.
机译：已经进行了通过水力直径范围从60.5到211 ur的长微通道的流动的详细实验研究。已测量沿通道长度的内部压力分布，以分析局部流动行为。详细研究了微通道流动中可压缩性和向湍流过渡的影响。另外，已经使用可商购的CFD代码FLUENT对所得的流量进行了数值分析。已经表明，在适当地考虑了可压缩性的显着影响之后，至少在当前的水力直径范围内，没有特殊的微观尺度效应，包括从早期过渡到湍流。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2009年第8期|2196-2204|共9页
  • 作者

    K. Vijayalakshmi; K.B. Anoop; H.E. Patel; P.V. Harikrishna; T. Sundararajan; Sarit K. Das;

  • 作者单位

    Department of Mechanical Engineering, Indian Institute of Technology-Madras, Heat Transfer and Thermal Power Laboratory, Chennai 600 036, Tamil Nadu, India;

    Department of Mechanical Engineering, Indian Institute of Technology-Madras, Heat Transfer and Thermal Power Laboratory, Chennai 600 036, Tamil Nadu, India;

    Department of Mechanical Engineering, Indian Institute of Technology-Madras, Heat Transfer and Thermal Power Laboratory, Chennai 600 036, Tamil Nadu, India;

    Department of Electrical Engineering, Indian Institute of Technology-Madras, Chennai 600 036, India;

    Department of Mechanical Engineering, Indian Institute of Technology-Madras, Heat Transfer and Thermal Power Laboratory, Chennai 600 036, Tamil Nadu, India;

    Department of Mechanical Engineering, Indian Institute of Technology-Madras, Heat Transfer and Thermal Power Laboratory, Chennai 600 036, Tamil Nadu, 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
  • 中图分类
  • 关键词

    microchannel; gas flow; liquid flow; transition; compressibility; non-linearity; developing length; transition to turbulence;

    机译：微通道气流液体流量过渡;可压缩性非线性发育长度过渡到湍流;

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