Natural cooling is widely used for cooling electronic equipment due to its simple structure,high reliability and obvious cost advantages.In order to cope with the increasingly high heat flux of electronic devices,the heat transfer perfor-mance of natural cooling plate needs to be further improved.In this paper a kind of cycloid fin is proposed based on the model of brachistochrone curve.The heat transfer performance is compared with that of traditional straight fin through numerical simulation,and the parameters affecting the cycloid fin are optimized and designed.The results show that the heat transfer performance of the cycloid fin is significantly improved compared with that of the traditional straight fin.Under the same conditions,the temperature of the device corresponding to the cycloid fin is reduced by more than 4 ℃ compared with that of the device corresponding to the traditional straight fin;the cycloid radius and cycloid angle both have impact on the heat transfer performance of the cycloid fin.Under the given boundary conditions,heat transfer performance of the cycloid fin is the best when the cycloid radius is 200 mm and the inlet angle is 30°,and the corresponding device temperature is about 5.9 ℃ lower than that of the traditional straight fin.
关键词
自然散热/摆线/设计优化/数值模拟
Key words
natural cooling/cycloid/design and optimization/numerical simulation
维普
万方数据