翅片结构对金属-聚合物散热器散热性能影响的数值模拟研究  

Numerical study on the effect of fin structures on heat transfer performance of metal-polymer compound radiator

作　　者：庄俭[1] 黄漫玲[2] 张亚军[1] 何晓祥[1] 吴大鸣[1] ZHUANG Jian HUANG Manling ZHANG Yajun HE Xiaoxiang WU Darning(College of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029, China Department of Security and Protection,Beijing College of Politics and Law,Beijing 100024, China)

机构地区：[1]北京化工大学机电工程学院,北京100029 [2]北京政法职业学院安全防范系,北京100024

出　　处：《中国科技论文》2017年第4期439-443,共5页China Sciencepaper

基　　金：高等学校博士学科点专项科研基金资助项目(2012001020006)

摘　　要：针对芯片的冷却问题,基于热量传递平衡原理,提出了1种新型的金属-聚合物复合式散热器,该散热器利用金属基板优良的导热性能和聚合物微结构翅片优良的散热性能实现热量的高效导出和高效散出。采用FloEFD热分析软件对翅片的高度、厚度、间距等翅片结构对复合式散热器散热性能的影响进行了研究。结果表明当翅片高度为50mm时,热源温度最低;当翅片厚度和间距分别为1mm和2.5mm时,对流换热系数存在最大值,分别为32.54和31.93 W/(m^2·K),为高效、低成本的金属-聚合物散热器的推广和应用提供依据。A new type of metal-polymer composite radiator is proposed based on the principle of heat transfer balance, which is based on the excellent thermal conductivity of metal substrates and the excellent heat dissipation of performance polymer micro-structure fins to achieve highly efficient heat export and efficient release. The influence of fin structure such as height, thickness and pitch on the heat dissipation performance of composite radiator is studied by using FloEFD thermal analysis software. The re-sults show that when the fin thickness is 50 mm, the heat source temperature is the lowest. When the fin thickness and pitch are 1 mm and 2. 5 mm respectively, the convective heat transfer coefficient has the maximum value of 32. 54 W/（m2 · K） and 31. 93 W/（m2 ·K） , respectively. This work provides a basis for the promotion and application of high-efficiency and low-cost metalpolymer radiators.

关 键 词：散热器 金属-聚合物复合 数值模拟 散热性能 热量传递平衡 

分 类 号：TN40[电子电信—微电子学与固体电子学]