局所歪を伴う拡散火炎に関する研究 : (第1報, 温度特性と消炎現象の観測)

概要

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Experimental studies are made of H_2/N_2-air laminar counterflow diffusion flames strained by impinging micro fuel or air jet from fuel or air side. Direct observation and two-dimensional temperature measurements by laser Rayleigh scattering method reveal the following phenomena. (1) The flame strained by the micro fuel jet from the fuel side is easily quenched locally, but the flame strained from the air side hardly extinguishes and the flame temperature tends to increase. (2) The flame is extinguished by higher strain rate even in the case of impinging micro air jet. (3) Relighting is observed at the place far from the initial flat flame. Phenomenological discussions with respect to preferential diffusion and flame curvature effects are included.
社団法人日本機械学会の論文
1998-05-25