伸長を受けるメタン・プロパン混合燃料予混合炎の消炎特性

概要

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Concerning the stretched cylindrical premixed flames formed in a radial-flow nozzle burner, effects of fuel mixing between methane and propane were examined on the extinction characteristics, such as the velocity gradient (stretch rate) and flame diameter at the state of extinction and flame temperature variations with the velocity gradient. These fuels were used because they have been known to show different behavior to the extinction due to flame stretch. The results showed that the characteristics were not linearly related with the volume fraction of each component fuel, but inclined to be weighted with propane and that at the stoichiometric condition some mixed fuels had a stronger resistibility to flame extinction than the pure component fuel. To explain the results, theoretical analysis based on the flame sheet model was carried out for the investigation of the effects of stretch, fuel mixing, Lewis number and preferential diffusion on the flame temperature which is closely related to the extinction phenomena.
一般社団法人日本機械学会の論文
1995-01-25