摘要
针对氢氧火箭发动机羽烟紫外辐射机理的分析,紫外辐射的理论研究等需求,采用HITRAN数据库计算OH*紫外波段吸收系数,利用FLUENT和离散坐标法(DOM)建立能够计算不同方位羽烟紫外辐射的二维模型。并且在实验室内进行了氢氧火箭发动机的点火实验,采集了氢氧燃烧羽烟的紫外辐射光谱以及不同角度的紫外辐射空间分布,通过与模型计算得到的OH*紫外辐射光谱和不同方位羽烟的紫外辐射分布数据的对比,验证了羽烟紫外辐射模型计算的有效性。相关研究对于优化紫外逼近预告警系统整体设计,评估系统探测性能等方面具有重要的理论和实用价值。
Liquid hydrogen and oxygen are common used fuel and oxidizer in liquid rocket motor,and ultraviolet radiation is thought mostly result from the transition of OH from excited state to ground state with peak value at 281 nm and 306 nm.A 2-D model is built to calculate the spatial distribution of UV radiation intensity,and the spectral absorption coefficient is calculated based on HITRAN database.The ignition of lab-scale hydrogen oxygen rocket motor is performed.Ultraviolet spectral and spatial radiation of the rocket plume are measured.The model is validated by experiment data.This research can be used in optimization of ultraviolet approach warning system and evaluation of system detection performance.
出处
《激光与红外》
CAS
CSCD
北大核心
2011年第11期1222-1225,共4页
Laser & Infrared
基金
国家“863”计划(No.2009AA01Z225)
国防预研课题(No.110010202)资助
