多孔铜微通道复合热沉最大热阻最小化构形设计  

Constructal design of porous copper microchannel hybrid heat sink based on maximum thermal resistance minimization

作　　者：张乔斌[1] 李文龙 奚坤 谢志辉[2] 孟凡凯[2] ZHANG Qiao-bin;LI Wen-long;XI Kun;XIE Zhi-hui;MENG Fan-kai(College of Naval Architecture and Ocean Engineering, Naval Univ. of Engineering, Wuhan 430033, China;College of Power Engineering, Naval Univ.of Engineering, Wuhan 430033, China)

机构地区：[1]海军工程大学舰船与海洋学院,武汉430033 [2]海军工程大学动力工程学院,武汉430033

出　　处：《海军工程大学学报》2022年第3期1-6,共6页Journal of Naval University of Engineering

基　　金：国家自然科学基金资助项目(51979278,51579244,11974429)。

摘　　要：为改善高热流密度器件的散热,建立了多孔铜微通道复合热沉模型,以最大热阻最小为优化目标、热沉单元端面纵横比和热沉整体长宽比为优化变量,开展了多孔铜微通道复合热沉构形设计研究。结果表明:优化热沉单元端面纵横比,增大冷却剂入口Re数和减小热流密度可显著降低最大热阻;最大热阻随着热沉单元端面纵横比的增大而减小,随热沉整体长宽比的增大而增大;当热沉单元端面纵横比和热沉整体长宽比均较小时,消耗的泵功率较少。To improve the heat dissipation of high heat flux devices,a model of porous copper microchannel hybrid heat sink was established.The constructal optimization for porous copper microchannel hybrid heat sink was carried out when the maximum thermal resistance(MTR)minimization was taken as the optimization objective,and the aspect ratio of heat sink unit and length-width ratio of heat sink were selected as the optimization variables.The results show that the MTR can be significantly reduced by optimizing the aspect ratio of heat sink unit,increasing the Reynolds number of coolant at the entrance and decreasing the heat flux density;that the MTR decreases with the increase of the aspect ratio of heat sink unit and increases with the increase of length-width ratio of heat sink;and that the smaller the aspect ratio of heat sink unit and the length-width ratio of heat sink are,the less the pump power consumptionis is.

关 键 词：构形理论 电子器件冷却 多孔材料 微通道热沉 热管理 

分 类 号：TK12[动力工程及工程热物理—工程热物理]