微通道散热器拓扑结构优化与温度特性研究  

Study on topology optimization and temperature characteristics of microchannel heat sinks

作　　者：储鹏 付婷[1] 张峰[1] 丁小康[2] Chu Peng;Fu Ting;Zhang Feng;Ding Xiaokang(Wuhan University of Science and Technology,Wuhan 430081,China;Quzhou University,Quzhou 342000,China)

机构地区：[1]武汉科技大学,武汉430081 [2]衢州学院,衢州342000

出　　处：《低温与超导》2024年第11期25-32,59,共9页Cryogenics and Superconductivity

基　　金：国家自然科学基金(12102311);浙江省自然科学基金(ZCLTGS24E0601)资助。

摘　　要：本文利用变密度拓扑优化方法对三种热源排列方式的微通道进行结构设计,获得最优的拓扑流道形貌参数,运用流动沸腾传热的蒸发作用实现对高温热点的有效降温。结果表明,当热流密度Q=90 W/cm^(2)时,三种热源排列方式微通道散热器的最高温度分别降低了21.64%、19%和18.2%。沸腾传热模拟结果显示,与平行微通道相比,三种拓扑微通道的对流传热系数h分别增加了25.83%、26.72%和24.60%,热阻Rtot分别减少了21.51%、24.93%和21.47%,综合传热性能评价系数PEC最高达到了1.87。A variable-density topology optimization method was employed to design the structure of microchannels with three different heat source configurations,aiming to obtain optimal flow channel morphology parameters By harnessing the evapo-rative effects of flow boiling heat transfer and effectively mitigates high-temperature hotspots.At a heat flux of Q=90 W/cm^(2),the results indicate that the peak temperatures of the microchannel heat sinks for the three configurations are reduced by 21.64%,19%,and 18.2%,respectively.Simulations of boiling heat transfer show that,compared to parallel microchannels,the convective heat transfer coefficients in the optimized topology microchannels increase by 25.83%,26.72%,and 24.60%,respectively,while the total thermal resistance decreases by 21.51%,24.93%,and 21.47%,respectively.The comprehensive performance evaluation coefficient PEC achieves a maximum value of 1.87.

关 键 词：非均匀热源 热源排列方式 微通道散热器 拓扑优化 流动沸腾传热 

分 类 号：TK124[动力工程及工程热物理—工程热物理]