基于换热率最大的翅针单列热沉构形优化  

Constructal Heat Transfer Rate Maximization for Plate Single-Row Pin Fin Heat Sink

作　　者：杨爱波 陈林根 冯辉君 戈延林 YANG Aibo;CHEN Lingen;Feng Huijun;GE Yanlin(The 91404th Unit of PLA,Qinhuangdao 066001,China;Institute of Thermal Science and Power Engineering,Wuhan Institute of Technology,Wuhan 430205,China;School of Mechanical&Electrical Engineering,Wuhan Institute of Technology,Wuhan 430205,China)

机构地区：[1]中国人民解放军91404部队,秦皇岛066001 [2]武汉工程大学热科学与动力工程研究所,武汉430205 [3]武汉工程大学机电工程学院,武汉430205

出　　处：《工程热物理学报》2022年第5期1304-1309,共6页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.51779262)。

摘　　要：本文建立了矩形直肋热沉与圆柱针肋相结合的翅针单列热沉构形优化模型,在给定热沉占空体积和针肋材料体积的约束条件下,给定热沉底面温度,以换热率最大化为目标对翅针单列热沉进行了构形优化。结果表明:与矩形直肋热沉相比,翅针单列热沉的换热性能得到了很大提高;不同的材料占比、入口速度和肋高比条件下,热沉最优构形不同。本文的研究结果可为实际热沉的热设计及使用提供科学依据和理论指导。A constructal optimization model of plate single-row pin fin heat sink which combines rectangular fin heat sink and cylindrical pin-fin is established in this paper. With the volumes of the heat sink and the pin-fin material as well as the temperature of the substrate of the heat sink being given, the model is optimized to maximize the heat transfer rate. The results show that the heat transfer performance of the plate single-row pin fin heat sink is improved obviously compared to that of rectangular fin heat sink, and the optimal constructs of the plate single-row pin fin heat sink are different from each other under different pin fin material fraction, inlet velocity and height ratio of pin fin. The results obtained herein can provide scientific bases and theoretical guidelines for the thermal designs of real plate single-row pin fin heat sink and its applications.

关 键 词：热沉 换热率 构形设计 广义热力学优化 

分 类 号：TK124[动力工程及工程热物理—工程热物理]