乱流予混合火炎における乱れと混合 : 第2報,火炎微細構造とその混合過程への影響

概要

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Confined turbulent premixed flames stabilized by a pilot flame were investigated to elucidate the local fine structure of flames and its influence on mixing processes in the combustor. The fine flame structure was classified on the basis of the measured turbulence characteristics, and thee probability density functions (PDF's) of local fluctuating velocities and temperature were examined in detail. A plateaulike distribution in the temperature PDF, which may correspond to a "distributed reaction zone", was first observed in a limited portion of the flame, in addition to a typical bimodal distribution corresponding to the structure of a "wrinkled laminar flame" or "laminar flamelets". The influence of the fine flame structure on the mixing processes was examined using an inert gas tracer.
社団法人日本機械学会の論文
1989-06-25