摘要
为了解决封闭腔体内器件散热的问题,设计了通风散热系统,基于COMSOL的多场耦合仿真,对其进行有限元分析,研究对比了不同的通风口位置、腔体结构的散热效果,得到温度和气流的仿真结果,分析了不同位置的通风口对于系统散热的利弊,以及腔体和器件内气体的流向。结果表明:腔体通风口的布局对于散热有明显的影响,优化的布局可以提高散热效率;通过在腔体内增加挡板的方式,将腔体分割成两部分,配合器件的内部结构,形成了良好的风道,能够提高散热效率。
We addressed the cooling of electronic devices inside the vacuum isolated cavity set-up,comprising the fan,air-conditioner,vortex flowmeter,baffle and enough air.The flow fields of heat and air in the cavity was empirically approximated,mathematically formulated in standard k-εmodel,theoretically analyzed in heat ventilation theory and numerically simulated with COMSOL Multiphysics software.The influence of the cavity structure and vent position on the heat dissipation was investigated.The simulated results show that the position and alignment of cylinder baffle and vent have a major impact.To be specific,the cylinder baffle divides the cavity space into two parts with the inner part containing the electronic devices.The baffle and the vent,installed at the optimized position,significantly increase the heat dissipation efficiency,because formation of good air-path significantly promotes ventilation and effectively improves air-cooling of electronic devices.
作者
张驰宇
未永
白建国
Zhang Chiyu;Wei Yong;Bai Jianguo(Sanying Precision Instruments Co.,Ltd,Tianjin 300399,China)
出处
《真空科学与技术学报》
EI
CAS
CSCD
北大核心
2020年第9期813-817,共5页
Chinese Journal of Vacuum Science and Technology
关键词
传热
有限元
真空
COMSOL
多场耦合
Heat transfer
Finite element
Vacuum
COMSOL
Multiphysics modeling
