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Experimental and numerical investigations of heat transfer and flow characteristics of cross-cut heat sinks

机译:横切式散热器传热和流动特性的实验和数值研究

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摘要

This study aims to experimentally and numerically investigate the heat transfer and flow characteristics of plate-fin and cross-cut heat sinks. The accuracy of the measured data is verified by comparing them with the exiting correlations. In the case of the cross-cut heat sink, the effects of cross-cut lengths (L_c) and number of cross-cuts (N_c) are presented. The experimental results show that the cross-cut heat sink with L_c = 1.5 mm gives the lowest thermal resistance. In the case of a numerical study, the numerical results are validated by comparing them with the measured data. The comparison results show that the present model gives reasonable agreement with the measured data. Consequently, the present model is used to find the optimal length and number of cross-cuts. From the numerical results, it is found that the thermal resistance of a cross-cut heat sink with L_c = 1.5 mm and N_c = 6 is 16.2% lower than that of a plate-fin heat sink at the same pumping power.
机译:本研究旨在通过实验和数值研究板翅片和横切式散热器的传热和流动特性。通过将测量数据与现有的相关性进行比较,可以验证测量数据的准确性。对于横切式散热器,呈现了横切长度(L_c)和横切数量(N_c)的影响。实验结果表明,L_c = 1.5 mm的横切式散热器的热阻最低。在进行数值研究的情况下,可以通过将数值结果与测量数据进行比较来验证数值结果。比较结果表明,该模型与实测数据吻合良好。因此,本模型用于找到最佳的横切长度和数量。从数值结果可以看出,在相同的泵浦功率下,L_c = 1.5 mm和N_c = 6的横切式散热器的热阻比板翅式散热器低16.2%。

著录项

  • 来源
    《International Journal of Heat and Mass Transfer》 |2016年第11期|142-153|共12页
  • 作者单位

    Fluid Mechanics, Thermal Engineering and Multiphase Flow Research Lab. (FUTURE), Department of Mechanical Engineering, King Mongkut's University of Technology Thonburi, Bangmod, Bangkok 10140, Thailand,The Joint Graduate School of Energy and Environment, King Mongkut's University of Technology Thonburi, Bangmod, Bangkok 10140, Thailand;

    Fluid Mechanics, Thermal Engineering and Multiphase Flow Research Lab. (FUTURE), Department of Mechanical Engineering, King Mongkut's University of Technology Thonburi, Bangmod, Bangkok 10140, Thailand;

    Research Centre for Combustion Technology and Alternative Energy (CTAE), Department of Power Engineering Technology, College of Industrial Technology, King Mongkut's University of Technology North Bangkok, Bangsue, Bangkok 10800, Thailand;

    Fluid Mechanics, Thermal Engineering and Multiphase Flow Research Lab. (FUTURE), Department of Mechanical Engineering, King Mongkut's University of Technology Thonburi, Bangmod, Bangkok 10140, Thailand;

  • 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

    Heat sink; Parallel flow; Cross cut; Plate fin; Forced convection;

    机译:散热器;平行流交叉切割;板翅;强制对流;

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