现代电子技术2017，Vol.40Issue(8)：1-3,7,4.DOI:10.16652/j.issn.1004-373x.2017.08.001
大功率LED散热器的空气强制对流冷却研究
Study on air forced convection cooling for high-power LED heat sink
摘要
Abstract
Aiming at the heat dissipation problem of the high-power LED,the numerical calculation method is used to study the flow heat interchange characteristic of the fluid inside the plain film heat sink. On the basis of the COMSOL Multiphys-ics platform,three different turbulence models were examined. On this basis,the comparative analysis for the heat dispersion performance of the heat sinks with continuous plain film and discrete plate film was carried on. The calculation results show that the accuracy of the standard k-? model is the highest;in comparison with the continuous plain film,the heat transfer coefficient of the discrete plate film is increased by 5%~10% and its resistance factor is decreased by 3.5%~7.12% when the inlet velocity is increased from 1 m/s to 9 m/s. This study provides the theoretical basis and calculation data for the optimization design of the heat sink structure.关键词
大功率LED/散热器/湍流模型/分段平片/传热分析Key words
high-power LED/heat sink/turbulence model/discrete plate film/heat transfer analysis分类
信息技术与安全科学引用本文复制引用
周俊杰,绳冉冉,李雪丽..大功率LED散热器的空气强制对流冷却研究[J].现代电子技术,2017,40(8):1-3,7,4.基金项目
国家自然科学基金项目(51276173) （51276173）
