分流式微通道热沉强化传热性能数值分析  

A Numerical Analysis of the Enhanced Performance in Heat Transfer of a Manifold Micro-Channel Heat Sink

作　　者：唐巍 孙立成[1] 刘洪涛[1] 谢果[1] 唐继国 鲍静静 TANG Wei;SUN Li-cheng;LIU Hong-tao;XIE Guo;TANG Ji-guo;BAO Jing-jing(State Key Laboratory of Hydraulics and Mountain River Engineering,College of Water Resource&Hydropower,Sichuan University Chengdu 610065)

机构地区：[1]四川大学水利水电学院水力学与山区河流开发保护国家重点实验室,成都610065

出　　处：《电子科技大学学报》2018年第6期864-868,共5页Journal of University of Electronic Science and Technology of China

基　　金：国家自然科学基金(51376052);国家自然科学基金青年科学基金(51606130;51506099)

摘　　要：分流式微通道热沉MMHS与一般的微通道热沉MHS相比具有更强的传热能力及散热均匀性,在电子芯片等高发热设备冷却方面具有优势。该文通过数值方法模拟了MHS与MMHS单个肋通道内的换热过程,对比分析了两者在总体换热能力及散热均匀性方面的差异。结果表明,入口流量在0.57～2.87 kg/h范围时,MMHS微通道平均换热系数比MHS提高1倍以上,同时散热均匀性提高52%以上;MMHS具有的多进口多出口的几何结构和流动过程是MMHS综合换热性能大幅提升的主要原因。Manifold micro-channel heat sink(MMHS)has a better heat transfer capacity and uniformity compared with the conventional micro-channel heat sink(MHS),showing a great potential in cooling equipments with high heat generation rate like electronic chips.A numerical simulation work was carried out on heat transfer process in a single unit of MHS and MMHS.For the mass flow rate covering 0.57~2.87 kg/h,averaged heat transfer coefficient of the MMHS is enhanced over 100%and the heat dissipation uniformity is increased 52%compared with the MHS.The multiple inlets and outlets in the MMHS contribute a lot to the improvement of heat transfer performance.

关 键 词：芯片散热 散热均匀性 分流式微通道热沉 微通道热沉 

分 类 号：TK5[动力工程及工程热物理—热能工程]