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首页> 外文期刊>International Journal of Heat and Mass Transfer >Multidisciplinary optimization of a pin-fin radial heat sink for LED lighting applications
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Multidisciplinary optimization of a pin-fin radial heat sink for LED lighting applications

机译：用于LED照明应用的针鳍径向散热器的多学科优化

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摘要

In this study, the cooling performance and mass of a pin-fin radial heat sink were optimized. A radial heat sink with pin fins was examined numerically to obtain a lighter heat sink while maintaining a similar cooling performance to that of a plate-fin heat sink investigated in a previous study. Both natural convection and radiation heat transfer were considered. Experiments were performed to validate the numerical model. The average temperature and mass of the heat sink for various types of fin arrays were compared to determine an appropriate reference configuration. The effects of various geometric parameters on the thermal resistance and mass of the heat sink were investigated; these indicated that the system was sensitive to the number of fin arrays, as well as the length of the long and middle fins. Multidisciplinary optimization was carried out using the three design variables to minimize the thermal resistance and mass simultaneously, and Pareto fronts were obtained with various weighting factors. A design for the optimum radial heat sink is proposed, which reduces the mass by more than 30% while maintaining a similar cooling performance to that of a plate-fin heat sink.
机译：在这项研究中，优化了散热片的散热性能和质量。对带有散热片的径向散热片进行了数值检查，以得到更轻的散热片，同时保持与先前研究中所研究的平板散热片类似的冷却性能。自然对流和辐射传热都被考虑了。进行实验以验证数值模型。比较了各种类型的鳍片阵列的散热器的平均温度和质量，以确定合适的参考配置。研究了各种几何参数对散热器的热阻和质量的影响；这些表明系统对鳍阵列的数量以及长鳍和中鳍的长度敏感。使用这三个设计变量进行多学科优化，以同时减小热阻和质量，并使用各种加权因子获得帕累托前沿。提出了一种用于最佳径向散热器的设计，该设计可将质量减少30％以上，同时保持与板翅式散热器相似的冷却性能。

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