摘要
将 Mie散射理论与蒙特卡罗法相结合分析了含吸收散射粒子半透明介质层的容积吸收特性。考虑了半透明入射表面的折射与反射、不透明壁面的漫反射、半透明介质的吸收以及粒子系的吸收和独立多次非规则各向异性散射。直接由粒子复折射率、粒径及入射辐射波长等基本参数 ,根据 Mie散射理论确定粒子系的吸收、散射因子以及非规则的各向异性散射分布。计算分析了介质层光学厚度、粒子复折射率、尺度参数、粒子系特征参数以及锥形入射时的入射倾角和锥形角对介质层容积吸收性能的影响。
The Monte Carlo method is combined with the Mie scattering theory to analyze the volumetric absorption characteristics of a semitransparent medium layer with absorbing and scattering particles.The absorption and independent irregular multi anisotropic scattering of the particles are considered along with the refraction and specular reflection of the semitransparent incident surface,the diffuse reflection of the opaque wall as well as the absorption of the semitransparent medium.By the Mie scattering theory,the absorptive and scattering properties of the particles are directly predicted from the basic parameters such as the complex refractive index,the particle diameter and the wavelength of the irradiation.The influences on the volumetric absorption are investigated,which are exerted by the particle dimension parameter,the relative complex refractive index and other relevant parameters.Those parameters include the characteristic parameter of the particles,the optical thickness of the medium as well as the incident angle and the conicity of the conic irradiation.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2000年第3期300-306,共7页
Acta Energiae Solaris Sinica
基金
国家自然科学基金! (5 96 0 6 0 0 6 )
国家杰出青年基金! (5 972 5 6 17)
关键词
半透明介质
容积吸收特性
吸收散射粒子
semi transparent medium,volumetric absorption,anisotropic scattering,Monte Carlo method
