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首页> 外文期刊>Journal of Thermophysics and Heat Transfer >Heat Transfer Augmentation in Rotating Triangular Channels with Discrete and V-Shaped Ribs
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Heat Transfer Augmentation in Rotating Triangular Channels with Discrete and V-Shaped Ribs

机译：具有离散和V形肋的旋转三角通道中的传热增强

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摘要

Heat transfer has been experimentally measured in a rotating triangular-shaped cooling channel with the rotation number up to 0.65. Continuous, discrete, V-shaped, and discrete-V ribs are applied on the leading and trailing surfaces to augment heat transfer. The rib spacing-to-height ratio (P/e) is 9 and rib height-to-hydraulic diameter ratio (e/D_h) is 0.085. Regionally averaged heat transfer coefficients are measured along the streamwise and spanwise directions with the Reynolds numbers from 15,000 to 25,000. Effects of secondary flow induced by ribs and rotation in this channel give distinct local heat transfer distributions. Results show that V-shaped and discrete-V ribs have comparable heat transfer distributions, and both have the highest heat transfer enhancement at stationary condition as well as rotating conditions.
机译：已经在旋转数最大为0.65的旋转三角形冷却通道中通过实验测量了热传递。连续，不连续，V形和不连续V形的肋条分别应用于前后表面，以增强热传递。肋骨间距与高度之比（P / e）为9，肋骨高度与液压直径之比（e / D_h）为0.085。沿流向和跨向测量雷诺数为15,000到25,000的区域平均传热系数。肋骨和该通道中的旋转引起的二次流动的影响给出了独特的局部传热分布。结果表明，V型肋和离散V型肋具有相似的传热分布，并且在固定状态和旋转状态下都具有最高的传热增强效果。

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  • 来源
    《Journal of Thermophysics and Heat Transfer》 |2012年第4期|603-611|共9页
  • 作者

    Yao-Hsien Liu; Shi-Yu Lai;

  • 作者单位

    National Chiao-Tung University, Hsinchu 30010, Taiwan, Republic of China;

    National Chiao-Tung University, Hsinchu 30010, Taiwan, Republic of China;

  • 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
  • 中图分类
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