摘要
散热问题是LED灯具成为新一代照明光源亟待解决的关键问题之一。提出一种LED灯具散热建模方法:选用LED射灯作为代表产品进行散热建模研究,采用三维造型软件建立LED灯具产品三维模型,然后导入有限元流体热分析软件(CFD)进行热仿真。研究散热仿真过程中的热阻设置、热量载荷计算和边界条件设定等关键问题,并求解LED射灯的工作温度分布情况;将仿真分析结果与实验室测试数据进行对比分析研究。研究结果表明,运用该方法可以对室内照明LED灯具进行较为准确的散热分析,仿真温度误差在4℃左右,仿真结果对灯具开发设计具有重要参考价值。
Heat dissipation is one of the key problems need to be solved for LED lamps as a new generation of lighting light. A heat dissipation modeling method was presented for the LED lamp. The LED spot lamp was selected for dissipative research, 3D models were established by modeling softwares, then the models were transferred into finite element thermal analysis software （CFD） for simulation. Several key aspects such as thermal resistance setting, heat load calculation and boundary conditions were considered in the analysis process, and the simulation result was compared with laboratory test data. The results show that the method can be used for accurate thermal analysis simulation of indoor LED lighting, with the temperature error less than 4 ℃, and the simulation result is of a great reference value for lighting design.
出处
《半导体技术》
CAS
CSCD
北大核心
2013年第1期60-64,共5页
Semiconductor Technology
基金
国家科技支撑计划项目(2011BAE01B10)
国家高技术研究发展计划(863计划)资助项目(2011AA03A109)
关键词
照明
LED射灯
散热
建模
仿真
lighting
LED spot lamp
heat dissipation
modeling
simulation
