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首页> 外文期刊>Heat Transfer Engineering >A Numerical Investigation of Flow and Heat Transfer of Laminar Multiple Slot Jets Impinging on Multiple Protruding Heat Sources
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A Numerical Investigation of Flow and Heat Transfer of Laminar Multiple Slot Jets Impinging on Multiple Protruding Heat Sources

机译：层流多槽射流撞击多个突出热源的流动和传热的数值研究

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摘要

The flow and heat transfer behavior of laminar incompressible slot jets impingement cooling of an array of heated surfaces in a channel have been investigated numerically. The computations are done for a variety of values of slot jets Reynolds number, channel height and distance between two heated blocks. The influences of these geometrical and physical parameters are predicted. The results, streamline contour, velocity profile, isothermal contour, local Nusselt number, and average Nusselt number are compared and documented. The first and second recirculation cells size are gradually increased, and the highest heat transfer rate is attained when Reynolds number increased. However, the heat transfer rates are decreased when channel height increased. The peak local Nusselt number value is noticed at stagnation point of the first block by first jet, and the second peak local Nusselt number value is observed at fourth block by second jet. The distances between two blocks play a significant role in the downstream velocity which leads to create the strong recirculation cells in between the two heated blocks when the distance between the two blocks increased.
机译：层状不可压缩缝隙射流撞击通道中加热表面阵列的流动和传热行为已经进行了数值研究。对于缝隙喷嘴雷诺数，通道高度和两个加热块之间的距离的各种值进行了计算。这些几何和物理参数的影响是可以预测的。比较并记录结果，流线轮廓，速度分布，等温线，局部Nusselt数和平均Nusselt数。第一和第二再循环室的尺寸逐渐增加，并且当雷诺数增加时达到最高的传热速率。然而，当通道高度增加时，传热速率降低。通过第一喷流在第一区块的停滞点观察到峰值的局部努塞尔值，并且在第二喷流在第四区块观察到第二峰值的局部努塞尔值。两个块之间的距离在下游速度中起着重要作用，当两个块之间的距离增加时，下游速度会在两个加热的块之间形成强大的再循环孔。

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  • 来源
    《Heat Transfer Engineering》 |2020年第5期|65-83|共19页
  • 作者

    Maheandera Prabu Paulraj; Chan Byon; Andrea Vallati; Rajesh Kanna Parthasarathy;

  • 作者单位

    Discipline of Mechanical Engineering Indian Institute of Technology Indore Indore Madhya Pradesh India;

    School of Mechanical and Nuclear Engineering Ulsan National Institute of Science and Technology Ulsan Korea;

    DIAEE Department of Sapienza University of Rome Rome Italy;

    Department of Mechanical Engineering College of Engineering and Computing Al Ghurair University Dubai UAE;

  • 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);
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  • 正文语种 eng
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