メタン・空気層流予混合火炎の反応帯において高空間分解能測定された自発光スペクトル : 自発光強度比OH^/CH^と当量比の相関

概要

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Spatially resolved chemiluminescent spectra were obtained in the reaction zone in a laminar premixed methane/air flame (φ=0.9-1.5) using local flame emission measurements with a new Cassegrain mirror system and spectrometers. The distributions of the OH^*, CH^*, and C_2^* emission intensities in the flame front were obtained at atmospheric pressure using this method. C_2^* was found to have the thinnest reaction zone. Highly spectrally resolved OH^*, CH^* and C_2^* emission were obtained at the local flame front. The linear correlations between the peak intensity ratios of OH^*/CH^*, C_2^*/CH^*, and C_2^*/OH^* in the reaction zone to the equivalence ratio could be used to investigate the local flame stoichiometry. OH^*/CH^* could be used to determine the local flame stoichimetry in the reaction zone of premixed flames for a wider range of equivalence ratios.
一般社団法人日本機械学会の論文
2000-07-25