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Effect of Manufacturing Tolerances on the Cooling Performance of Internal Rib Turbulated Passages

机译：制造公差对内肋湍流通道冷却性能的影响

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摘要

The manufacturing tolerances of rib turbulators lead to variations in the cooling of internal ribbed passages because the manufacturing tolerances cause the actual geometry to differ some from the design which affects the flow structure as well as the coolant mass flow rate. Such variations may significantly affect the system cooling performance, and may lead to the failure of hot components. Thus, it is necessary to determine the effects of manufacturing tolerances on the cooling performance for such variations in rib turbulators in internal passages. This study numerically investigates the cooling of internal rib turbulated passages using the relationship between the geometric parameters and the coolant mass flow rate using the three-dimensional Reynolds-averaged Navier-Stokes equations for various rib heights, rib widths, wall thicknesses, and coolant mass flow rates. Correlations are developed to predict the cooling performance in response to geometric variations of the internal passages due to manufacturing tolerances. The variations in the design parameters of the internal rib turbulated cooling system has differing effects on the cooling performance, even within the same range of manufacturing tolerances.
机译：肋状湍流器的制造公差导致内部肋状通道的冷却发生变化，因为制造公差导致实际几何形状与设计有所不同，从而影响流动结构以及冷却剂质量流量。这样的变化可能会严重影响系统的冷却性能，并可能导致发热组件的故障。因此，对于内部通道中的肋湍流器的这种变化，有必要确定制造公差对冷却性能的影响。这项研究使用几何参数和冷却剂质量流量之间的关系，使用三维雷诺平均Navier-Stokes方程，针对各种肋高，肋宽，壁厚和冷却剂质量，通过数值研究内部肋湍流通道的冷却流量。发展相关性以预测由于制造公差而导致的响应于内部通道的几何变化的冷却性能。即使在相同的制造公差范围内，内部肋骨湍流冷却系统的设计参数变化也会对冷却性能产生不同的影响。

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  • 来源
    《Heat Transfer Engineering》 |2019年第8期|418-428|共11页
  • 作者

    Park Sehjin; Moon Hokyu; Chung Heeyoon; Park Jun Su; Cho Hyung Hee;

  • 作者单位

    Yonsei Univ, Dept Mech Engn, 50 Yonsei Ro, Seoul 03722, South Korea;

    Yonsei Univ, Dept Mech Engn, 50 Yonsei Ro, Seoul 03722, South Korea;

    Yonsei Univ, Dept Mech Engn, 50 Yonsei Ro, Seoul 03722, South Korea;

    Korea Natl Univ Transportat, Dept Energy Syst Engn, Chungbuk, South Korea;

    Yonsei Univ, Dept Mech Engn, 50 Yonsei Ro, Seoul 03722, South Korea;

  • 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
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