基于多目标遗传算法的蛛网形微通道结构优化  

Optimization of Spider Web-shaped Microchannel Structure Based on Multi-objective Genetic Algorithm

作　　者：卫红梅[1] WEI Hong-mei(Shanxi Provincial Key Laboratory for Advanced Manufacturing Technology,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学先进制造技术山西省重点实验室,太原030051

出　　处：《科学技术与工程》2025年第9期3698-3703,共6页Science Technology and Engineering

基　　金：先进制造技术山西省重点实验室开放基金(XJZZ202307)。

摘　　要：为解决现有微通道散热技术存在的不足和电子散热需求多元化的发展趋势,提出一种蛛网型微通道热沉结构,并对其几何结构参数进行了多目标优化来提升蛛网形微通道热沉的综合性能。采用Box-Behnken设计方法,对热沉的槽宽、翅宽、槽深设计变量进行响应曲面分析,拟合出蛛网形微通道的温度与压降函数;以拟合后的两函数为目标函数,用多目标粒子群寻优算法得到Pareto解集,并使用逼近理想解排序法(technique for order preference by similarity to an ideal solution,TOPSIS)从Pareto解集中进行选择。结果表明,Pareto解集为不同状况下的最优解,温度与压降函数的多元统计系数R^(2)分别为0.9996和0.9984,表明拟合函数的精确度高。优化后的结构与原设计相比,不仅平均温度降低了3 K,压降也降低了1514 Pa,综合性能显著提升,表明合理的通道结构设计可以进一步提高微通道热沉的综合性能。In order to enhance the overall performance of the heat sink,a novel meshed microchannel heat sink structure was introduced,and its geometric parameters were optimized by performing a multi-objective optimization.The Box-Behnken design method was utilized to conduct response surface analysis on the design variables of channel width,fin thickness,and channel depth.The resulting temperature and pressure drop functions of the spider-shaped microchannel were then fitted as objective functions.The Pareto solution set was derived by applying a multi-objective particle swarm optimization algorithm,followed by utilizing the technique for order preference by similarity to an ideal solution(TOPSIS)method for selection from the Pareto solution set.It is concluded that the Pareto solution set is the optimal choice across various conditions.The multivariate statistical coefficients R^(2)for temperature and pressure drop functions are 0.9996 and 0.9984,respectively,suggesting a high level of accuracy in the fitting function.The optimized structure not only reduces the average temperature by 3 K compared with the original design,but also decreases the pressure drop by 1514 Pa.This significant improvement in comprehensive performance demonstrates that a well-designed channel structure can further enhance the heat sink performance of the microchannel.

关 键 词：微通道热沉 响应面拟合 粒子群优化算法 热阻函数 压降函数 

分 类 号：TK124[动力工程及工程热物理—工程热物理]