基于协同场原理探究LED太阳花散热器的散热性能

Research on Heat Dissipation Performance of LED Sunflower Radiator Based on Field Synergy Principle

LED散热问题作为LED产品开发的关键问题之一,越来越受到重视。太阳花散热器因其诸多优点,在LED散热领域应用十分广泛。由于对太阳花散热器的研究主要集中在对其本身的结构优化,常常忽略其安装位置对散热性能的影响。为探究LED太阳花散热器安装位置对其散热的影响,该文用数值模拟和实验验证相结合的方法,根据协同场理论,比较了太阳花散热器不同安装位置的散热性能。结果表明:随着协同角β的增加,散热器温度场与空气流场的协同性越来越差,其散热越来越差;β=0°时,散热器的最高温度为57.8℃,β=90°时,为66.7℃,温度上升高达8.9℃。散热器安装位置对散热性能的影响不可忽略。最后,通过实验验证了模拟的正确性,模拟值与实验值吻合良好。

As one of the key problems in the development of LED products,the heat dissipation of LED is being paid more and more attention. The sun flower radiator is widely used in the field of LED heat dissipation because of its many advantages. Because the research of the sunflower radiator is mainly focused on the optimization of its structure,it often neglects the influence of the installation position on the heat dissipation. In order to explore the influence of installation position of LED sunflower radiator on its heat dissipation,this paper compares the heat dissipation performance of sunflower radiator at different installation locations based on field synergy theory by combining numerical simulation with experimental verification. The results show that： with the increase of synergistic angle,the synergy between the temperature field and the air flow field of the radiator is worse and worse,and the heat dissipation is getting worse. When the β = 0°,the maximum temperature of the radiator is 57. 8 ℃,when the β = 90°,the temperature is 66. 7 ℃,the temperature rises to 8. 9 ℃. The influence of the installation position of the radiator on the heat dissipation of the radiator can not be ignored. Finally,the correctness of the simulation is verified by the experiment, and the simulation value is in good agreement with the experimental value.