散热片基板开孔对自然对流换热的影响  

Effect of perforations of heat sink substrate on natural convection heat transfer

作　　者：龚振兴 鹿博 孙永升 

机构地区：[1]山东超越数控电子有限公司,山东济南250101

出　　处：《热科学与技术》2016年第5期358-362,共5页Journal of Thermal Science and Technology

摘　　要：为研究自然对流情况下矩形散热片基板开孔对换热的影响,采用数值模拟方法对基板开孔的散热片的传热性能进行了分析,讨论了开孔后换热强化的物理机制。结果表明:开孔后发热元件的温度降低;通孔破坏了散热片基板上速度边界层的形成,从而强化了局部表面处的对流换热。To study the effects of the perforations on heat sink substrate on natural convection heat transfer,three-dimensional numerical simulations are performed to investigate the heat transfer performance of the heat sink substrate.The physical mechanism of the natural convection heat transfer enhancement by the perforations is discussed.The research results can provide an important guideline for thermal design of the electronic devices.

关 键 词：自然对流 散热片 开孔 强化传热 

分 类 号：TK124[动力工程及工程热物理—工程热物理]