翅片宽度及厚度对管板式热沉传热性能的影响

目的研究翅片宽度及厚度对管板式热沉性能的影响。方法利用Ansys中的Fluent模块,对管板式热沉不同宽度和厚度翅片的传热性能进行模拟仿真,分析翅片宽度和厚度对管板式热沉温度均匀性的影响。结果翅片越窄,热沉温度均匀性越好,且翅片平均温度越接近载冷剂温度。增加翅片厚度,可以强化传热,但热沉质量和制造成本也会上升,且增大到一定值时,传热效果增强不显著。结论热沉翅片的宽度和厚度对热沉的温度均匀性有很大的影响,翅片越厚,宽度越窄,热沉的温度均匀性越好,但不能一味采取增加厚度和减小宽度的方式来提高热沉温度均匀性,在设计热沉时,需结合其他因素综合选取翅片的宽度和厚度。

The Effects of Fin Width and Thickness on Heat Transfer Performance of Tube-sheet Heat Sink

Objective To Sstudy the effects of fin width and thickness on the performance of tube-plate heat sink. Methods Fluent module in Ansys was used to simulate the heat transfer performance of tube-plate heat sink fin with different width and thickness of tube-plate heat sink fin, and analyze the effects of fin width and thickness on the temperature uniformity of tube-plate heat sink were analyzed. Results It shows that tThe narrower the fin, the better the temperature uniformity of heat sink, and the closer the average temperature of the fin wais to the temperature of the coolant.. Increasing the fin thickness can enhance heat transfer, but increase the heat sink weight and manufacturing cost will also increase, and . When it is was increased to a certain value, the heat transfer effect would not beis not enhanced significantly. Conclusion The width and thickness of the heat sink fin have a great influences on the temperature uniformity of the heat sink. The thicker the fin, the narrower the width, and the better the temperature uniformity of the heat sink. However, the uniformity of heat sink temperature cannot be improved by simply increasing the thinchnessthickness and reducing the width. When designing the heat sink, it is necessary to combine the other factors to select the fin width and thickness.