基于蒙特卡洛方法的辐射光谱的计算  

THE DETERMINATION OF RADIATION SPECTRUM BASED ON MONTE CARLO METHOD

作　　者：赵国艳[1] 常海萍[1] 金峰[1] 金展秀[1] 

机构地区：[1]南京航空航天大学能源与动力学院,江苏南京210016

出　　处：《工程热物理学报》2009年第3期471-474,共4页Journal of Engineering Thermophysics

摘　　要：本文采用蒙特卡洛方法(MCM)对颗粒材料的辐射光谱进行模拟计算。根据颗粒的复折射率,运用Mie理论计算出了颗粒系的辐射参数,如吸收系数、散射系数和不对称因子,将这些辐射参数作为蒙特卡洛模拟的入口参数得到了颗粒系的辐射光谱。通过对十种颗粒材料辐射光谱的计算,认为铁系化合物和氧化亚铜具有低透射高吸收的性能,该方法对气溶胶隐身材料的选取具有指导意义。A Monte Carlo Method （MCM） is introduced to determine the radiation spectrum for particle material. By making use of the Mie theory and knowing the particles＇ complex refractive index, we work out the particles system＇s radiant parameters, such as the absorption coefficient, the scattering coefficient and the asymmetry factor, and regarding them as the entrance variables for the Monte Carlo simulation, the radiation spectrum can be determined. After working out the radiation spectra for some ten certain materials and comparing them, we get a conclusion that ferric compound and Cuprous Oxide have the performance of low-transmittance and high-absorptivity, which agrees well with the literature. So the method introduced above can supply a direct basis for choosing the aerosol stealth material.

关 键 词：蒙特卡洛 辐射光谱 辐射参数 复折射率 

分 类 号：O436[机械工程—光学工程]