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介绍了一套用于燃烧研究中对温度和成分浓度测量进行校准的氢 /空气预混平面火焰燃烧系统。采用氮CARS技术对氢 /空气预混平面火焰温度进行了系统的测量 ,包括不同当量比条件下的温度分布 ,温度的纵向和横向空间分布。结果表明 ,氮CARS测温与氢 /空气预混平面火焰的理论计算温度之间的误差为 3.4 % ,而在燃烧炉表面上方 1mm以上的空间属于火焰的温度均匀区 ,温度的不均匀性约为 1.8%。
A hydrogen / air premixed planar flame combustion system for the calibration of temperature and compositional concentrations used in combustion studies is presented. Nitrogen CARS was used to systematically measure the flame temperature of hydrogen / air premixed plane, including the temperature distribution at different equivalence ratio and the longitudinal and transverse spatial distribution of temperature. The results show that the error between the CARS temperature of nitrogen and the theoretically calculated temperature of hydrogen / air premixed planar flame is 3.4%, while the space above 1mm above the surface of the combustion furnace belongs to the uniform temperature region of the flame. The temperature inhomogeneity is about 1.8%.