摘要
根据火箭发动机燃烧流场诊断的需要 ,介绍了一种非接触式的光学诊断技术———相干反斯托克斯喇曼光谱 (简称CARS)。从理论上分析了温度、浓度和压力对CARS光谱线型的影响 ;对单脉冲和多脉冲测量的方法进行了比较 ;在平面火焰炉上对液化石油气 /空气的预混火焰进行了氮分子CARS测温实验 ,对实验结果进行了分析 ,并对下一步的工作提出了设想。
In order to diagnose the process of combustion and flow of rocket engine, Coherent Anti stokes Raman Spectroscopy (CARS) is introduced. The effects of temperature, concentration and pressure on line shape of theoretical CARS is analysed , and the method of single pulse CARS and accumulated pulses CARS is compared. The experiment of measurement for temperature in a premixed LPG/air plane flame is performed and the result is discussed .At last , the next plan is conceived.
出处
《上海航天》
2001年第4期19-25,共7页
Aerospace Shanghai
