乱流予混合火炎における乱れと混合 : 第1報,乱流特性と火炎の広がり

概要

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Confined turbulent premixed flames stabilized by a pilot flame were investigated to elucidate the influences of the inlet condition of unburned mixture on the flame spread and mixing processes in the combustor. Detailed distributions of local velocities and its fluctuating components were measured by a laser Doppler velocimeter, and fluctuating temperatures by a compensated 25 μm thermocouple. Velocity difference across the pilot stream enhances the development of the non-combusting mixing layer, but does not augment the flame spread when the mixture has a higher velocity than the pilot burner stream and when the mixture strength is weak. The turbulence intensity in the approach streams significantly promotes the mixing and flame spread in the combustor.
社団法人日本機械学会の論文
1988-04-25