摘要
针对一款阵列型大功率LED投光灯的散热特点,使用计算流体力学软件Icepak,仿真模拟其关键散热部分,并应用中心组合设计及响应面分析法对平板型散热器进行了优化;选取翅片高度、翅片间距和翅片厚度为3个响应因子,散热器的温度为响应值;运用Design Expert 8.06软件对数据进行分析和优化计算,得到了三因子与散热器温度的回归方程以及三因子之间相互作用的三维响应面图.结果表明:三因子的最佳取值为翅片高度23.92 mm,翅片间距5.99 mm,翅片厚度1.03 mm,在此条件下散热器温度为45.182 2℃,与Icepak模拟仿真值相比,误差仅为+0.575%;说明使用此方法求得平板型散热器优化的数学模型是可行的.
For the thermal characteristics of an array of highpower LED lamps for spotlight, the heat dissipation of critical structures was simulated by Icepak, and the flat fin heat-sink were optimized by central composite design and response surface methodology. The fin height, fin spacing and fin thickness are selected as the three response factors, and the temperature of the heat sink as the response value. By using the Design Expert 8.06 software, the data can be obtained the best combination, and finally get the polynomial quadratic equations between the three-factor and response value, also have the three-dimensional response surface diagrams of the interaction between the three-factor. The results show that the optimum condition is as follows ： the fin height is 23.92 ram, the fin spacing is 5.99 mm the fin thickness is 1.03 ram, and the temperature is 45.182 2 ℃. through comparison between the Icepak simulation value and the measured data obtained by central composite design, the calculation error of temperature is as low as ＋0.575%. This reveals the applicability of central composite design and response surface methodology to the optimization of flat fin heat-sink.
出处
《天津工业大学学报》
CAS
北大核心
2013年第5期38-42,共5页
Journal of Tiangong University
基金
国家高技术研究发展计划(863计划)资助项目(2010AA03A1A7)
科技型中小企业技术创新资金(132XCXGX31700)
作者简介
李红月（1988-），女。硕士研究生．
通信作者：牛萍娟（1973-），女，博士，教授，硕士生导师．E—mail：Pjniu@hotmail．com.
