摘要
可调谐二极管激光器吸收光谱技术(Tunable Diode Laser Absorption Spectroscopy,TDLAS)广泛应用于碳氢燃料燃气参数(温度、组分浓度和气流速度)实时在线和非接触测量。针对碳氢燃料火箭基组合循环(Rocket Based Combined Cycle,RBCC)发动机的高速燃气参数测量,设计了双交叉光束(7444.352+7444.371)/7185.597cm-1谱线对扫描波长-时分复用双线直接吸收光谱技术(Direct Absorption Spectroscopy,DAS)系统,将其应用于RBCC地面实验高速燃气参数在线测量,同时获得了燃气温度、H2O组分浓度和速度等多参数,并将测量结果与数值模拟计算结果对比,相对偏差不超过12%,这为RBCC发动机燃烧组织优化和结构优化提供重要依据。
Tunable Diode Laser Absorption Spectroscopy（TDLAS） is widely used for online and non-intrusive measurements of multiple parameters（temperature,species concentration and velocity） of hydrocarbon fuel combustion gas. Two crossed-beam scanned-wavelength Direct Absorption Spectroscopy（DAS） system with（7444.352＋7444.371） /7185.597 cm^-1 line-pair was developed for high-speed hydrocarbon fuel combustion gas measurement in Rocket Based Combined Cycle（RBCC）. And it was applied to the online measurements in ground-test of RBCC. Temperature,H2O concentration and velocity were obtained,and the relative deviation compared with CFD results was less than 12%. This work can provide important reference data for the combustion organization and structure optimization of RBCC.
出处
《推进技术》
EI
CAS
CSCD
北大核心
2015年第8期1236-1241,共6页
Journal of Propulsion Technology
关键词
测量技术
激光光谱技术
燃烧诊断
火箭基组合循环发动机
Measurement technique
Laser Spectroscopy
Combustion diagnostics
Rocket based combined cycle engine
