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Two-dimensional temperature determination in the exhaust region of a laminar flat-flame burner with linear Raman scattering

机译：线性拉曼散射的层流平焰燃烧器排气区域二维温度测定

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For planar temperature measurements in combusting flows, the well-established laser Raman technique has been further developed to provide two-dimensional local resolution. After excitation with a frequency-doubled Nd:YAG laser, the anti-Stokes and the Stokes Raman signals of the vibrational Q branch of molecular N↓(2) were detected at 473.3 and 607.3 nm, respectively. From the ratio of the two images, two-dimensional temperature distributions have been obtained by application of an analytical function, which was determined from theoretically calculated Raman spectra. Time-averaged measurements have been performed in the exhaust region of an atmospheric-pressure laminar CH↓(4)/air flat-flame burner for different equivalence ratios. The accuracy and precision of the results are discussed in combination with the prospects for time-resolved single-pulse measurements. # 1997 Optical Society of America
机译：为了测量燃烧流中的平面温度，已经进一步开发了完善的激光拉曼技术，以提供二维局部分辨率。用倍频的Nd：YAG激光激发后，在473.3 nm和607.3 nm处检测到分子N↓（2）的振动Q分支的反斯托克斯和斯托克斯拉曼信号。从两个图像的比率，通过应用解析函数获得了二维温度分布，该解析函数是根据理论计算的拉曼光谱确定的。对于不同的当量比，在大气压层流CH↓（4）/空气平焰燃烧器的排气区域中进行了时间平均测量。结合时间分辨单脉冲测量的前景，讨论了结果的准确性和精确性。 ＃1997美国眼镜学会

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