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将蒙特卡罗方法用于模拟含粒子的半透明流体层对入射辐射的光谱吸收特性 ,考虑了粒子的吸收与各向同性散影响 .以含粒子水层为例 ,计算了其对不同光谱平行入射辐射的吸收率及不同深度处的吸收份额分布 ,分析了粒子系衰减系数、散射反照率及入射辐的入射角度等因素对水层吸收特性的影响 .研究结果表明 ,外部辐射的入射角度在通常的应用范围内对流体层内的吸收分布影响较小 ;粒子作用使流体层的吸收能力发生改变 ;粒子散射使流体层对入射辐射能的最大吸收处偏离表面
The Monte Carlo method is used to simulate the spectral absorption of incident radiation by a particle-containing translucent fluid layer, taking into account the absorption and isotropic scattering of the particles. Taking the water layer containing particles as an example, The absorption rate of incident radiation and the distribution of absorption fraction at different depths, the influence of particle attenuation coefficient, scattering albedo and incidence angle of incident radiation on the absorption characteristics of water layer were analyzed.The results show that the incident angle of external radiation is In the usual range of application, the absorption distribution in the fluid layer is less affected; the particle action changes the absorption capacity of the fluid layer; and the particle scattering causes the maximum absorption of the incident radiation energy by the fluid layer to deviate from the surface