氢／空气预混平面火焰CARS温度测量

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４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％。

CARS temperature measurement of H_2/air premixed flat flame

A H 2/air premixed flat flame burner as calibra tion source for CARS temperature and species concentration measurements was esta blished. Temperatures for various stoichiometries along longitude and transv erse have been systematically measured by N 2 CARS. The results indicate that difference between measurement temperature and the corresponding theoretical value is about 3.4 percent . Whereas temperature is nearly invariant beyond 1 mm above the burner surface, the associated error is around 1.8 percent.