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首页> 外文期刊>International Journal of Heat and Mass Transfer >Investigation of natural convection heat transfer around a radial heat sink with a perforated ring
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Investigation of natural convection heat transfer around a radial heat sink with a perforated ring

机译：带孔环的径向散热器周围自然对流换热研究

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摘要

Numerical studies were performed on natural convection heat transfer from radial heat sinks with perforated ring. The effects of perforation number (0-6), perforation diameter (0-3 mm), and perforation length (1.5-6 mm), and orientations angle (0-180°) on the thermal performance were investigated. The results show that radial heat sinks with a perforated ring obviously have better thermal performance than that with imperforated ring. Upwardly oriented radial heat sinks have the best thermal performance while sideward oriented radial heat sinks yield worst thermal performance. The geometric parameters of perforation is shown to affect the thermal performance of heat sink significantly at relatively higher heat transfer rate, especially for upward and sideward orientations. The thermal resistance of the radial heat sink with optimized perforated ring was shown to be less than that of imperforated ring by 17%, while reducing the mass of ring by up to 37%. This can be attributed to the unhindered natural convective flow through the perforation.
机译：对带有穿孔环的径向散热器的自然对流换热进行了数值研究。研究了射孔数（0-6），射孔直径（0-3 mm），射孔长度（1.5-6 mm）和取向角（0-180°）对热性能的影响。结果表明，带有穿孔环的径向散热器明显比没有穿孔环的散热器具有更好的热性能。向上定向的径向散热器具有最佳的热性能，而侧向定向的径向散热器产生的热性能最差。穿孔的几何参数显示出在相对较高的传热速率下会显着影响散热器的热性能，尤其是在向上和向侧的方向上。带有优化穿孔环的径向散热器的热阻显示为比穿孔环小17％，同时将环的质量降低了37％。这可以归因于穿过穿孔的自然对流畅通无阻。

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  • 来源
  • 作者

    Bin Li; Sora Jeon; Chan Byon;

  • 作者单位

    School of Mechanical Engineering, Yeungnam University, Gyeongsan 712-749, Republic of Korea;

    School of Mechanical Engineering, Yeungnam University, Gyeongsan 712-749, Republic of Korea;

    School of Mechanical Engineering, Yeungnam University, Gyeongsan 712-749, Republic of Korea;

  • 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

    Radial heat sink; Concentric ring; Perforation;

    机译：径向散热器;同心环;穿孔;

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