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| 利用TDLAS技术开展碳氢燃料高速燃气参数测量 |
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杨 斌1,2,3,潘科玮3,4,黄 斌3,刘佩进3,何国强3
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（1. 上海理工大学 颗粒与两相流测量研究所，上海 200093;2. 上海市动力工程多相流动与传热重点实验室（上海理工大学），上海 200093;3. 西北工业大学 燃烧、热结构与内流场国家级重点实验室，陕西 西安 710072;4. 上海航天动力技术研究所，上海 201109）
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| 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。 |
| 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 |
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| Measurements of High-Speed Hydrocarbon Fuel |
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YANG Bin1,2,3,PAN Ke-wei3,4,HUANG Bin3,LIU Pei-jin3,HE Guo-qiang3
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(1. Institute of Particle and Two-phase Flow Measurement,University of Shanghai for Science and Technology,Shanghai200093,China;2. Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering University of Shanghai for Science and Technology，Shanghai 200093，China;3. Science and Technology on Combustion，Internal Flow and Thermal-Structure Laboratory，Northwestern Polytechnical University，Xi’an 710072，China;4. Shanghai Space Propulsion Technology Research Institute，Shanghai 201109，China）
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| Abstract: |
| 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. |
| Key words: Measurement technique Laser Spectroscopy Combustion diagnostics Rocket based combined cycle engine |
