强爆炸热辐射在大气中的传输计算与分析

摘要

针对强爆炸热辐射源的光谱特征，采用热辐射分谱段大气传输模型，解决了已有经验公式无法计算热辐射光谱特征的问题。计算结果表明，受不同能量光子大气传输特性的影响，热辐射光谱特征随距离发生变化：紫外部分较可见光和红外部分衰减更快，可见光和红外部分所占的比例随距离增加而逐渐增大。%Atmospheric transmission of thermal radiation from strong explosions was mod-eled according to the spectral characteristics of different spectral bands,providing a way to calculate the spectral characteristics at different distances for different wavelengths,which is unable to do by formula in the past.It is shown that due to the attenuation peculiarities of different photons,the spectral characteristics of thermal radiation change with the distances from the explosion source.Furthermore,it is found that the ultraviolet spectrumt of thermal radiation decreases rapidly than the visible and infrared ones,which contributes to the in-crease of energy proportion for visible and infrared parts with the increase of distance.