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利用单脉冲激光诱导偏振光谱技术测量了甲烷/空气预混火焰、酒精灯火焰和固体燃剂燃烧场中OH的二维分布。简述了激光诱导偏振光谱技术的基本原理和二维测量的实验方法;通过测量火焰中OH自由基A~2∑~+-X~2∏(0,0)跃迁带中Q1(8)吸收线的强度,获得了燃烧场中OH的二维分布。实验结果对了解火焰构造,研究燃烧机理等有一定的参考价值。
The two-dimensional distribution of OH in methane / air premixed flame, alcohol flame and solid fuel combustion field was measured by single-pulse laser-induced polarization spectroscopy. The basic principle of laser-induced polarization spectroscopy and the experimental method of two-dimensional measurement are briefly described. By measuring the absorption of Q1 (8) in the band A ~ 2Σ ~ + -X ~ 2Π (0,0) The intensity of the line obtained the two-dimensional distribution of OH in the combustion field. The experimental results have certain reference value for understanding flame structure and studying combustion mechanism.