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首页> 外文期刊>International Journal of Heat and Mass Transfer >Overall numerical simulation and experimental study of a hybrid oblique-rib and submerged jet impingement/microchannel heat sink
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Overall numerical simulation and experimental study of a hybrid oblique-rib and submerged jet impingement/microchannel heat sink

机译：杂交斜肋和浸没喷射冲击/微通道散热器的总体数值模拟与实验研究

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摘要

In this work, two submerged jet impingement/microchannel heat sink (JIMHS) models were proposed, i.e., straight-rib jet impingement/microchannel heat sink (SJIMHS) and oblique-rib jet impingement/microchannel heat sink (OJIMHS). The heat transfer and flow characteristics of the two models were investigated by overall numerical simulation and experiment. In the numerical simulation, the effects of heat flux, pressure drop and rib arrangement on the internal flow and heat transfer of the heat sink were studied. The results indicate that under the same heat flux and inlet condition, the heat transfer surface of OJIMHS achieves more uniform and lower temperature distribution compared with that of SJIMHS, and the average convective heat transfer coefficient of the OJIMHS is obviously higher than that of SJIMHS in all calculation cases, with an increase of about 20%. In addition, the performance of OJIMHS was tested experimentally. The comparison indicates that the maximum relative errors of average temperature and heat transfer coefficient between simulation and experiment were less than 9%. When the volume flow rate is 0.5 L/min and the heat flux is 100 W/cm~2, the average temperature of the heat transfer surface is still lower than 60°C. Besides, the averaged heat transfer coefficient of 2.8W/(cm~2 • K) was achieved under the inlet fluid temperature of 283K and volume flow rate of 2.5 L/min in the experiment.
机译：在这项工作中，提出了两个浸没式喷射冲击/微通道散热器（JIMHS）模型，即直肋喷射冲击/微通道散热器（SJIMH）和斜肋喷射冲击/微通道散热器（OjimH）。通过总值数值模拟和实验研究了两种模型的传热和流动特性。在数值模拟中，研究了热通量，压降和肋条布置对散热器的内部流量和传热的影响。结果表明，在相同的热通量和入口条件下，与Sjimhs的莫希米的传热表面达到更均匀且更低的温度分布，并且OjimHs的平均对流传热系数明显高于Sjimhs的热传递系数所有计算案例，增加约20％。此外，通过实验测试OjimHs的性能。比较表明，模拟和实验之间的平均温度和传热系数的最大相对误差小于9％。当体积流量为0.5L / min并且热通量为100W / cm〜2时，传热表面的平均温度仍然低于60℃。此外，在实验中，在283k的入口流体温度下实现2.8W /（cm〜2•k）的平均传热系数，并且在实验中的体积流速为2.5升/分钟。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2021年第3期|120839.1-120839.15|共15页
  • 作者

    H.C. Cui; X.T. Lai; J.F. Wu; M.Z. Wang; W. Liu; Z.C. Liu;

  • 作者单位

    School of Energy and Power Engineering Huazhong University of Science and Technology Wuhan 430074 China;

    School of Energy and Power Engineering Huazhong University of Science and Technology Wuhan 430074 China;

    School of Energy and Power Engineering Huazhong University of Science and Technology Wuhan 430074 China;

    School of Energy and Power Engineering Huazhong University of Science and Technology Wuhan 430074 China;

    School of Energy and Power Engineering Huazhong University of Science and Technology Wuhan 430074 China;

    School of Energy and Power Engineering Huazhong University of Science and Technology Wuhan 430074 China;

  • 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

    Hybrid heat sink; Oblique-rib; MicroChannel and jet; Rib arrangement; Impingement; Overall numerical simulation;

    机译：杂交散热器;斜肋;微通道和喷射;肋骨安排;冲击;总数数值模拟;

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