摘要
用基于有限元方法的Flo EFD软件,对碳纳米管在大功率发光二极管(LED)热管理中的应用进行模拟.建立起一个多壁碳纳米管阵列热传导的简化模型,据此模型对多壁碳纳米管阵列的等效热导率进行了计算.通过对采用不同热界面材料后LED灯具的稳态温度场分布的比较,发现碳纳米管阵列能大大提高灯具的热管理性能.模拟结果显示,采用聚氨酯碳纳米管复合材料涂层能大大降低结温.
A finite element simulation of carbon nanotubes function in high power LED thermal management was conducted using Flo EFD software in order to find out how carbon nanotube functions in heat dissipation of high power electronic devices. A simplified heat conduction model of multi-walled carbon nanotube arrays was established,and effective thermal conductivity of the multi-walled carbon nanotube array calculated based on the model. The steady-state temperature distributions of the LED with different thermal interface materials were then compared. It is shown that carbon nanotube arrays can greatly improve the thermal management performance of lamps,and that carbon nanotube polyurethane composite coating can greatly reduce the junction temperature.
出处
《厦门理工学院学报》
2016年第3期45-51,共7页
Journal of Xiamen University of Technology
基金
国家自然科学基金项目(61504113
61307115)
福建省自然科学基金项目(2012J01025)
厦门理工学院高层次人才项目(YKJ10010R)
关键词
发光二极管
热管理
碳纳米管
热界面材料
聚氨酯
high power LED
thermal management
carbon nantube
thermal interface materials
polyurethane
