摘要
提出了一种采用毛细结构盖板的阵列微喷射流冷却主动散热方案,用于对相控阵雷达高密度射频组件进行冷却,对采用不同结构形式盖板的射流冷却装置进行了数值仿真,详细研究了射流流体进口流速和封装基材材料对射流冷却装置散热效果的影响。结果表明:相比于光滑表面盖板,采用毛细结构表面后,射流冷却装置的散热效果得到明显强化,并且散热效果随着射流流体进口流速的提高而增强,此外封装基材的导热系数也会对射流冷却装置的散热效果产生显著影响。
Aiming at the demanding thermal management issue imposed by phased array radar high-density RF components,it proposes an innovative micro-jet array impingement cooling device with micro channel covers. It realizes the numerical simulation for the jet impingement cooling devices in four different kinds of covers,investigates the influences of the jet flow inlet velocity and package substrates thermal conductivities to the heat dissipation effect of this device. The results indicate that when micro channels are introduced to the jet impingement cooling device,the heat dissipation effect is strengthened obviously. The heat dissipation effect is also strengthened when increasing the jet flow inlet velocity. Besides,the thermal conductivities of the substrates also have significant impact to the heat dissipation effect of the device.
出处
《机械设计与制造工程》
2016年第5期88-91,共4页
Machine Design and Manufacturing Engineering
关键词
微喷射流
数值仿真
相控阵雷达
射频组件
micro-jet impingement
numerical simulation
phased array radars
RF components
