摘要
采用光线踪迹法结合区域法，考虑了壁面的多次反射及各向同性散射时能量传递份额的再分配，导出了两侧均为半透明界面下一维吸收、发射、各向同性散射介质的辐射传递系数．忽略Z向和Y向的散热，把空间辐射换热器液滴层简化为具有两个半透明界面的一维问题．将辐射传递系数和控制容积法相结合，数值模拟了空间辐射散热器液滴层内的瞬态温度分布．与分离变量法的计算结果比较表明，导出辐射传递系数的方法正确，计算结果精度高．
The radiative transfer coefficients (RTCs) of an one-dimensional, absorption , emission, isotropic scatter medium with two semitransparent boundray surfaces are deduced using the ray tracing methed in combination with Hottel's zonal method, multi-reflection of surfaces and the redistribution of radiative eneny in the case of isotropic scattering are investigated. The dissipation of waste heat at the direction of Z and Y are ignored so that the dripletfilled layer can be regarded as an one-dimensional problem. The transient temperature distribution is numerical simulated using the RTCs in combination with the control-volume method. By comparing with the result for the separetion of variable method, it is proved that the present model and calculation method is valid and more precise.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
1999年第2期85-88,共4页
Journal of Harbin Institute of Technology
基金
国家自然科学基金!59606006
关键词
空间辐射散热器
液滴层
辐射换热
散热器
Space radiator
liquid droplet layer
radiative heat transfer
radiation transfer coefficient
