摘要
运用 Mie 散射理论,计算了粒径服从对数正态分布的水雾和雾状油(柴油)的质量消光系数及其在可见光、中红外和远红外波段的波段平均质量消光系数.研究了粒径分布参数对水雾和雾状油遮蔽性能的影响,结果表明当 r_0与被遮蔽(波段)波长接近且 b_0趋于1时,(波段平均)质量消光系数具有最大值.雾状油在以上三个波段的遮蔽性能优于水雾,且粒径分布一定时,雾状油和水雾对中红外波段的遮蔽作用优于远红外波段.
Using the Mie Scattering theory,the mass extinction coefficients and the band mean mass extinction coefficients of the water fog and the oil fog with the lognormal distribution are calculated in visible-light band (0.3～0.8 μm)and the IR transmission windows(including 3～5)an and 8～14 μm).With the study of the relation between the parameters of the particles distributions and the mass extinction coefficients(or the band mean mass extinction coefficients),it's found that the mass extinction coefficients or the band mean mass extinction coefficients are maximum when bo closes to l and r_0 is near the extinction(wave band)wave length.The extinction ability of the oil fog is better than that of the water fog in those three wave bands.When the particles distributions of the water fog and the oil fog are given,their extinction ability is better in mid-infrared wave band than in far-infrared wave band.
出处
《红外与激光工程》
EI
CSCD
北大核心
2006年第z1期178-182,共5页
Infrared and Laser Engineering
关键词
水雾
雾状油
遮蔽
质量消光系数
烟幕
Water fog
Oil fog
Extinction characteristics
Mass extinetion coefficients
Smoking
