摘要
利用Mie理论研究了单分散煤粉颗粒对光波的散射特性,给出了单次散射相函数、消光效率因子、散射效率因子、不对称因子和单次散射反照率随粒子尺寸的变化关系;当煤粉浓度较大时,需要考虑颗粒系的多次散射特性,根据辐射传输理论,利用蒙特卡洛方法研究了煤粉颗粒的多次散射特性,并给出了其后向散射随观测角度、粒子半径和光学厚度的变化关系,计算结果对煤粉颗粒反演具有一定指导意义。
The light scattering characteristics of monodispersed pulverized coal particles are studied based on the Mie theory, and the single scattering phase function, extinction efficiencies, scattering efficiencies, single scattering atbedo and asymmetric parameters varied with the size of the particles are given. Light will undergo multiple scattering when it propagated in the pulverized coal particles with high concentration. Based on the radiative transfer theory, the Monte Carlo method is used to compute the multiple scattering characteristics of pulverized coal particles, and the backscattering function varied with the observed angles and particle radius are given. The results are significant to retrieval the radius of pulverized coal particles.
出处
《光散射学报》
北大核心
2014年第4期340-344,共5页
The Journal of Light Scattering
基金
国家自然科学基金(61205191)
关键词
光散射
辐射传输
煤粉
light scattering
radiative transfer
pulverized coal particles
