红外窗口辐射导热耦合换热研究  

Simultaneous Radiation and Conduction Heat Transfer in an Infrared Window

作　　者：刘晔[1] 黄勇[1] 

机构地区：[1]北京航空航天大学航空科学与工程学院,北京100191

出　　处：《工程热物理学报》2012年第12期2190-2193,共4页Journal of Engineering Thermophysics

摘　　要：针对高速飞行器典型红外窗口材料及气动加热外部热环境特点,建立红外窗口辐射导热耦合换热模型,采用光线跟踪法及有限差分法研究了红外窗口内部温度分布。考察了材料的物性、热边界条件等因素对温度分布的影响。研究结果表明,壁面对流换热系数、光谱吸收系数对红外窗口内部温度分布影响很大。According to typical infrared window materials characters of high-speed aircrafts and thermal environment of aerodynamic heating, a model of coupled heat transfer of radiation and conduction on infrared window was established. Ray tracing method and finite difference method were used to study internal temperature distribution of infrared window. The effects of material properties and thermal boundary condition on temperature distribution were studied. The results show that wall heat transfer coefficient and spectral absorption coefficient have a great influence on the inside temperature distribution of infrared window.

关 键 词：红外窗口 辐射导热耦合换热 温度场 

分 类 号：TK124[动力工程及工程热物理—工程热物理]