气溶胶所致稳态热晕效应的数值计算

Numerical Calculation for the Effect of Steady-state Thermal Blooming Caused by Aerosols

热晕效应是影响强激光大气传输的最严重的非线性问题之一,开展热晕效应研究,可有效地应用高能激光.依据激光在大气中传输时由气溶胶引起的衰减与能见度的经验模型,对气溶胶的等效吸收系数进行了计算,并就大气能见度对强激光水平传输稳态热晕效应的影响进行了数值计算.结果表明:能见度越小,吸收系数越大,热畸变效应越强.

Thermal blooming is one of most serious non-linear problems which affect laser atmospheric propagation.The high energy lasers can be effectively applied for research of thermal blooming.On the base of experiential model between attenuation due to aerosols and visibility,effective absorption coefficient of aerosol and influence of steady-state thermal blooming due to visibility when high energy laser propagate in the horizon atmospheric path were calculated.The results show that the smaller visibility is,the greater is the absorption coefficient,and the stronger is the effect of thermal distortion.