This study presented a two-dimensional heat transfer analysis of the light-emitting-diodes equipment’s heat sink module under forced convection theoretically. The metal materials of the base and fins in the heat sink included Cu, Al, Al alloy, Mg, Zn, Fe, constantan and stainless steel. The point-matching and series truncation methods were used to solve the heat transfer problem. Due to the complexity of the system, the heat sink was divided into two regions, i.e. base and fin, and were solved individually. The temperature distribution of the heat sink module was then obtained by imposing continuity of temperature and heat flux at the interface between the two regions. The results showed that the materials of fins had little effects on heat transfer rates and the differences in mean temperatures of the heat sinks for different materials are not pronounced for a smaller Bi. In addition, when the base of the heat sink was made of aluminum, a 7.4-fold, a 5.6-fold, and a 0.7-fold increases in Q* for copper fins, iron fins, and stainless steel fins were obtained, as Bi was raised from 0.0005 to 0.005 for W=0.5, T=0.5 and L=1.

中文翻译：

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大功率LED设备散热器模块的传热分析

该研究从理论上提出了在强制对流条件下发光二极管设备的散热器模块的二维传热分析。散热器底部和散热片的金属材料包括Cu，Al，铝合金，Mg，Zn，Fe，康斯坦丁和不锈钢。使用点匹配和串联截断方法来解决传热问题。由于系统的复杂性，散热器被分为两个区域，即底座和散热片，并分别进行了求解。然后通过在两个区域之间的界面处施加温度和热通量的连续性来获得散热器模块的温度分布。结果表明，鳍片的材料对传热速率影响很小，并且对于较小的Bi，不同材料的散热器平均温度差异并不明显。此外，当散热器的底部由铝制成时，铜鳍片，铁鳍片和不锈钢鳍片的Q *分别提高了7.4倍，5.6倍和0.7倍，Bi当W = 0.5，T = 0.5和L = 1时，系数从0.0005提高到0.005。