Tip Opening and Burning Intensity of Bunsen Flames Diluted with Nitrogen
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概要
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Tip opening and burning intensity of Bunsen flames diluted with nitrogen have been experimentally investigated. Methane-air and propane-air flames were used in the experiment. The tip opening limit was mapped as a function of the equivalence ratio φ and added nitrogen ratio χ, and the tip temperature was measured. Results show that the burning at the tip was more intense in rich flame for methane and lean flame for propane. The maximum allowable dilution by nitrogen also occurs in rich flame (φ=1.05) for methane and lean flame (φ=0.94) for propane. The tip temperature decreases steeply with increasing χ if the methane flame is lean or the propane flame is rich, while it decreases gradually if the methane flame is rich or the propane flame is lean. These results at the tip were due to the preferential diffusion and nonunity Lewis number resulting from negative stretch induced by flame curvature. The flame responses presented here to preferential diffusion and Lewis number are the reverse those of positively stretched stagnation flames.
- 一般社団法人日本機械学会の論文
- 1996-02-15
著者
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Ishihara Atsushi
Department Of Applied Chemistry Faculty Of Technology Tokyo University Of Agriculture And Technology
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SAKAI Yukio
Department of Industrial Chemistry, Faculty of Engineering, Tokyo Institute of Polytechnics
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KONISHI Katsuyuki
Department of Mechanical Engineering, Saitama Institute of Technology
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Sakai Yukio
Department Of Industrial Chemistry Faculty Of Engineering Tokyo Institute Of Polytechnics
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Konishi Katsuyuki
Department Of Mechanical Engineering Saitama Institute Of Technology
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Ishihara Atsushi
Department Of Mechanical Engineering Saitama Institute Of Technology
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SAKAI Yukio
Department of Mechanical Engineering, Saitama Institute of Technology
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SAKAI YUKIO
Department of Chemical Engineering, Faculty of Engineering Science, Osaka University
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