Study and optimization of ribbed flat-plate fin heat sink based on placoid scale shape

IF 2.6 3区工程技术 Q2 ENGINEERING, MECHANICAL International Journal of Heat and Fluid Flow Pub Date : 2024-09-14 DOI:10.1016/j.ijheatfluidflow.2024.109578

Zheng Lan, Si-yu Wu, Chuang-ye Li, Hui Chen, Ying-wen Liu

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Abstract

In this paper, a new kind of bionic spoiler rib based on the shape of a shark shield scale is proposed, and the structural parameters of the bionic rib with optimal jf factor are determined. The thermal properties of bionic fins with different lengths, widths, and heights and plate-fin heatsinks with different positions were studied utilizing computational fluid dynamics. Then the optimal structural parameters of the bionic fins were obtained by the Taguchi method and multi-objective optimization. The study finds that the jf factor of the bionic rib decreases by up to 15 % with increasing rib height at Reynolds number 6000. Conversely, it increases by up to 10.38 % with increasing rib length, decreasing by up to 2.07 % with increasing rib width at the same Reynolds number. In terms of location, the bionic rib can exert its effect of enhancing the jf factor when it is close to the channel outlet. Finally, using the Taguchi method and multi-objective optimization method, the optimal structural parameters of the bionic rib are H_r = 6.0 mm, W_r = 3.47 mm, and L_r = 3.0 mm when Re = 6000. The findings of this study can provide insights for research on flow spoiler structures.

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基于胎盘鳞片形状的肋状平板鳍片散热器的研究与优化

本文提出了一种基于鲨鱼盾牌鳞片形状的新型仿生扰流肋条，并确定了具有最佳 jf 因子的仿生肋条结构参数。利用计算流体动力学研究了不同长度、宽度和高度的仿生鳍片和不同位置的板鳍散热器的热性能。然后，通过田口方法和多目标优化，获得了仿生翅片的最佳结构参数。研究发现，在雷诺数为 6000 时，随着肋片高度的增加，仿生肋片的 jf 因子最多会降低 15%。相反，在雷诺数相同的情况下，随着肋条长度的增加，jf 因子最多可增加 10.38%，随着肋条宽度的增加，jf 因子最多可减少 2.07%。就位置而言，当仿生肋条靠近通道出口时，它能发挥提高 jf 因子的作用。最后，利用田口方法和多目标优化方法，当雷诺数为 6000 时，仿生肋条的最佳结构参数为 Hr = 6.0 mm、Wr = 3.47 mm 和 Lr = 3.0 mm。该研究结果可为扰流板结构的研究提供启示。

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来源期刊

International Journal of Heat and Fluid Flow 工程技术-工程：机械

CiteScore

5.00

自引率

7.70%

发文量

131

审稿时长

33 days

期刊介绍： The International Journal of Heat and Fluid Flow welcomes high-quality original contributions on experimental, computational, and physical aspects of convective heat transfer and fluid dynamics relevant to engineering or the environment, including multiphase and microscale flows. Papers reporting the application of these disciplines to design and development, with emphasis on new technological fields, are also welcomed. Some of these new fields include microscale electronic and mechanical systems; medical and biological systems; and thermal and flow control in both the internal and external environment.