浸没射流微通道热沉的数值模拟研究  

Numerical Simulation of Heat Sink of Submerged Jet Microchannel

作　　者：贺牧野 HE Muye(Anhui University of Science and Technology,Huainan Anhui 232000,China)

机构地区：[1]安徽理工大学,安徽淮南232000

出　　处：《佳木斯大学学报（自然科学版）》2022年第5期62-64,共3页Journal of Jiamusi University：Natural Science Edition

摘　　要：冲击射流冷却与微通道冷却是实现高热流密度电子器件快速散热的两种冷却方式。为了实现更高的换热效率,现结合冲击射流冷却与微通道冷却提出一种热沉结构,使用数值模拟的方法对热沉内部的流动特性及换热面的换热特性进行了研究。研究了在换热面增加圆形柱肋在不同靶距H,不同雷诺数Re的情况下对换热面的换热效率和换热均匀性的影响,并对圆形柱肋顺排分布与叉排分布的换热效果进行了对比。得出结论:增加圆形柱肋能够有效提升对流换热系数,提高换热效果;换热面圆形柱肋叉排分布较之顺排分布换热效果更好;对流换热系数与雷诺数成正比;在雷诺数Re不变的情况下,换热面平均温度随着靶距H的增加逐渐增加。Impingement jet cooling and micro-channel cooling are two cooling methods to realize rapid heat dissipation of high heat flux electronic devices.In order to achieve higher heat transfer efficiency,a heat sink structure is proposed combining impingent jet cooling and microchannel cooling,and numerical simulation method is used to study the flow characteristics inside the heat sink and heat transfer characteristics of the heat transfer surface.The effect of adding circular ribs on heat transfer efficiency and heat transfer uniformity of heat transfer surface under different target distances H and different Reynolds numbers was studied,and the heat transfer effect of circular ribs in row distribution and forked row distribution was compared.It is concluded that adding circular ribs can effectively improve convective heat transfer coefficient and heat transfer effect.The heat transfer effect of round column rib fork row distribution is better than that of row distribution.Convective heat transfer coefficient is proportional to Reynolds number.Under the condition of constant Reynolds number,the average temperature of heat transfer surface increases gradually with the increase of target distance H.

关 键 词：强化换热 射流微通道热沉 数值模拟 

分 类 号：TP242[自动化与计算机技术—检测技术与自动化装置]