基于烟囱效应的通信基站热沉优化设计  

Optimal design of heat sink for communication base station based on chimney effect

作　　者：王妙智 师春雨 刘伟[1] 刘志春[1] 刘欣[2] 李帅[2] 汪艳 WANG Miaozhi;SHI Chunyu;LIU Wei;LIU Zhichun;LIU Xin;LI Shuai;WANG Yan(School of Energy and Power Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;ZTE Corporation,Shenzhen 518057,China)

机构地区：[1]华中科技大学能源与动力工程学院,湖北武汉430074 [2]中兴通讯股份有限公司,广东深圳518057

出　　处：《热科学与技术》2023年第1期47-56,共10页Journal of Thermal Science and Technology

基　　金：中兴通讯研究基金;煤燃烧国家重点实验室开放基金资助项目(FSKLCCA2007)。

摘　　要：利用数值模拟的方法,探究了烟囱效应对通信基站热沉自然对流散热的强化作用,对影响热沉散热性能的主要因素及其机理进行了分析,并以热沉热阻作为优化目标,通过优化翅片间距与隔板间隙的取值提升了热沉的散热性能。在优化设计过程中,通过模糊均值聚类对拉丁超立方抽样所得的样本点进行筛选,快速并有效的缩减了设计区间,使用Kriging模型对新设计区间内的均匀样本点进行拟合,构建了热沉热阻与设计变量间的代理模型,并结合遗传算法寻优,确定了最优设计参数取值。在最优参数布置下,相比于初始热沉,热沉的发热面温度降低了15.23 K,总热阻降低了34.29%。The enhancement effect of chimney effect on the natural convection heat dissipation of heat sink for communication base station is studied by numerical simulation,and the main factors influencing the performance of the heat sink and the mechanism are analyzed.The thermal resistance of the heat sink is taken as the optimization objective and the heat dissipation performance of the heat sink is improved by optimizing fin spacing and baffle clearance.In the process of optimization design,the sample points from Latin hypercube sampling are filtered by fuzzy mean clustering to reduce the range of design quickly and effectively.Kriging model is used to fit the uniform sample points in the updated range of design and build the surrogate model between heat resistance and design parameters.Combined with genetic algorithm,the optimal design parameters are finally determined.Under the optimal arrangement,the temperature of the heating surface and the total heat resistance of the heat sink are decreased by 15.23 K and 34.29%respectively.

关 键 词：自然对流 强化散热 优化设计 模糊聚类 KRIGING模型 

分 类 号：TK124[动力工程及工程热物理—工程热物理]