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Heat transfer and flow analysis of Al_2O_3-Water nanofluids in interrupted microchannel heat sink with ellipse and diamond ribs in the transverse microchambers

机译:横向微室中椭圆形和菱形肋间断微通道散热器中Al_2O_3-水纳米流体的传热和流动分析

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摘要

A three-dimensional numerical simulation of an interrupted microchannel heat sink is performed to investigate the pressure drop and heat transfer characteristics of a nanofluid flow. In the first part the effect of two different rib shapes on flow characteristics is studied to find the optimum design. In this part water is used as working fluid. For the second part of the present work, an Al2O3/water nanofluid with different volume fractions is modeled as the working fluid, and its performance is compared to water. Analysis shows that using ellipse ribs results in better performance of the microchannel rather than diamond ribs and no ribs. It was also shown that at least 2% of nanoparticles volume fraction is required to achieve an enhancement in heat transfer.
机译:进行了中断的微通道散热器的三维数值模拟,以研究纳米流体流的压降和传热特性。在第一部分中,研究了两种不同肋形状对流动特性的影响,以找到最佳设计。在这部分中,水用作工作流体。对于本工作的第二部分,将具有不同体积分数的Al2O3 /水纳米流体建模为工作流体,并将其性能与水进行比较。分析表明,使用椭圆形肋比微肋和不带肋的微通道性能更好。还显示出需要至少2%的纳米颗粒体积分数来实现热传递的增强。

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  • 来源
    《Heat Transfer Engineering》 |2018年第16期|1461-1469|共9页
  • 作者单位

    Univ Auckland Dept Mech Engn 20 Symonds St Auckland 1010 New Zealand;

    Univ Teknol Malaysia Fac Mech Engn Dept Thermofluids Utm Skudai Johor Bahru Malaysia;

    Griffith Univ Sch Engn Gold Coast Campus Gold Coast Qld Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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