Performance Study and Optimization Design of Manifold Microchannel Heat Sink With Rectangular Ribs

LiU Yiwen; CUi Pan; LiU Wei; LiU Zhichun; CUi Haichuan

doi:10.3969/j.issn.1008-0198.2025.03.001

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Performance Study and Optimization Design of Manifold Microchannel Heat Sink With Rectangular Ribs

更新时间：2025-12-08

- Performance Study and Optimization Design of Manifold Microchannel Heat Sink With Rectangular Ribs
- Vol. 45, Issue 3, Pages: 1-8(2025)
- 作者机构：
  
  1. 华中科技大学能源与动力工程学院,湖北,武汉,430074
  2. 东风汽车集团股份有限公司研发总院,湖北,武汉,430056
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.1008-0198.2025.03.001
  CLC： TM172.4
- Published Online：02 July 2025，
  
  Published：2025
- 稿件说明：
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刘亦文, 崔盼, 刘伟, 刘志春, 崔海川. 矩形肋片歧管微通道热沉性能研究与优化设计[J]. 湖南电力, 2025, 45(3): 1-8.

LiU Yiwen, CUi Pan, LiU Wei, et al. Performance Study and Optimization Design of Manifold Microchannel Heat Sink With Rectangular Ribs[J]. 2025, 45(3): 1-8.
刘亦文, 崔盼, 刘伟, 刘志春, 崔海川. 矩形肋片歧管微通道热沉性能研究与优化设计[J]. 湖南电力, 2025, 45(3): 1-8. DOI： 10.3969/j.issn.1008-0198.2025.03.001.

LiU Yiwen, CUi Pan, LiU Wei, et al. Performance Study and Optimization Design of Manifold Microchannel Heat Sink With Rectangular Ribs[J]. 2025, 45(3): 1-8. DOI： 10.3969/j.issn.1008-0198.2025.03.001.

摘要

为提升歧管微通道热沉的综合性能

提出一种新型矩形肋片歧管微通道热沉。首先通过三维模拟研究矩形肋片排布、微通道宽度、高度及肋片宽度与微通道宽度的比值对热工水力性能的影响。然后采用人工神经网络和多目标遗传算法对结构参数进行优化

最后使用TOPSiS决策算法从Pareto前沿中选出综合性能最好的参数组合。优化后

与原热沉相比

在6 m/s的入口流速下

加热面最高温度降低了6.4 K

平均换热系数提高了46.3%

总压降降低了1.85 kPa。结果表明

避开入口歧管的射流孔和出口歧管的出流孔的矩形肋片热沉具备优异的综合性能。

Abstract

To enhance the comprehensive performance of the manifold microchannel heat sink (MMCHS)

a new manifold microchannel heat sink with rectangular ribs (MMCHS-RR) is proposed. Firstly

the three-dimensional numerical simulations are employed to investigate the effects of the arrangement of rectangular ribs

microchannel width

microchannel height

and the ratio of rectangular rib width to microchannel width on the thermal-hydraulic performance. Then the artificial neural network and a multi-objective genetic algorithm are used to optimize the structural parameters. Finally

the TOPSIS decision-making algorithm is applied to select the parameter combination with the best comprehensive performance from the Pareto front. After optimization

compared with the initial heat sink

the maximum temperature on the heated surface is reduced by 6.4 K

the average heat transfer coefficient is increased by 46.3%

and the total pressure drop is reduced by 1.85 kPa at an inlet flow rate of 6 m/s. The research results indicate that the heat sink with rectangular ribs arranged to bypass the jet holes of the inlet manifold and the outflow holes of the outlet manifold exhibits superior comprehensive performance.

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Keywords

references

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