摘要
针对散热器底部存在空气滞留区,减弱了散热器的对流换热效果。因此对散热器翅片进行开缝优化研究,采用Icepak软件模拟了3种不同开缝结构在不同开缝宽度情况下的散热过程,得到了不同开缝结构时散热器截面的温度边界层与速度边界层分布。结果表明:翅片内空气绕过开缝结构,增加了流动空气扰动,流动状态由单向变为多向,翅片间空气流速提高了18%,温度降低了5%。
An air stagnation zone at the bottom of the radiator weakened the convection heat transfer of radiator. Therefore, the perforated optimization on the fin of radiator was studied. Thermal process of three perforated structure models wiht different perforated widths was simulated by Icepak software to obtain the distribution of temperature boundary layer and velocity boundary layer. The results show that after air bypassed the structure of perforated fin, the flow state was changed from one-way to multi-way, which increased the flow of air disturbance,the air flow rate between fins increased by 18%,the temperature reduced by 5%,respectively.
出处
《电子设计工程》
2016年第10期108-110,113,共4页
Electronic Design Engineering
关键词
热管散热器
滞留区
开缝翅片
数值模拟
heat pipe radiator
stagnation zone
perforated fins
numerical simulation
