基于Mie理论的导弹燃气羽流激光散射特性数值仿真

Numerical Simulation for Laser Scattering Characteristic of Missile Gas Plume Based on Mie Theory

应用Mie氏散射理论对导弹燃气羽流中典型粒子光散射特性进行了理论分析与数值模拟,得到了消光、散射系数和散射强度分布与粒子直径的关系。结果表明,导弹燃气羽流对激光有较强的散射作用,通过理论计算散射占总消光50%以上,并计算了典型导弹燃气羽流全向散射能量分布,为相关系统设计提供了理论支撑。

Light scattering characteristics of missile gas plume typical particles are analyzed in theory and calculated numerically by using Mie＇s scattering theory, the relationship between the extinction, scattering coefficient,scattering intensity distribution and the particle diameter are obtained. The results show that the laser scattering ef-fect of missile plume is obvious through theoretical calculations of scattering accounted for more than 50% of the to-tal extinction. And typical missile gas plume omnidirectional scattering energy distribution is calculated, which pro-vides theory support for related system design.