太阳花散热器的热性能分析

针对长度为10 cm、翅片数量为18、翅片厚度为0.7 mm、翅片高度为14 mm的太阳花散热器，建立了数值模拟模型，并通过实验对模拟进行了验证，发现两者误差在3.5%以内，证明了模拟结果的可靠性。在此基础上，采用数值模拟研究了散热器长度、翅片数量、翅片高度、翅片厚度与翅片温度和传热系数的定量关系。研究结果表明，在相同散热量下，翅片温度与传热系数均随着散热器长度的增加而降低，而翅片温度随着翅片数量的增多先降低后升高，因而存在最佳翅片数量使散热能力最强；翅片温度随着高度的增加而降低，翅片厚度对翅片温度的影响不大。

Thermal performance analysis of sunflower radiator

For a sunflower radiator with a length of 10 cm, a fin number of 18, a fin thickness of 0.7 mm, and a fin height of 14 mm, numerical simulation model was established. The simulation was verified by experiments and errors were within 3.5%, which proved that the simulation result was reliable. Based on this, numerical simulation was carried out to study the quantitative relationship between radiator length, fin number, fin height and fin thickness vs. fin temperature and heat transfer coefficient. The results show that under the same amount of heat dissipation, the fin temperature and heat transfer coefficient decrease with the increase of the radiator length, while the fin temperature decreases first and then increases with the increase of fin number. Therefore, there is an optimal number of fins to maximize heat dissipation. The fin temperature decreases with height, while the fin thickness has little effect on the fin temperature.