D213 メタン-空気定常対向流予混合火炎の火炎構造に与える火炎伸長の影響 : 当量比を変化させた場合の検討(反応性流れの基礎と応用1)

概要

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Numerical simulation is applied to analyze the counterflow premixed flame with chemical kinetics model. The change in the influence of flame stretch on flame structure by equivalence ratio φ(φ=0.55, 0.75, 0.95, 1.15) is investigated. Methane-air premixed gas with a temperature of 300K and atmosphere pressure is spouted from both planes. The spout velocities are changed from near laminar burning velocity to near extinction limit. As a result, the effect of the flame stretch is superior to Lewis number effect when φ is not very small and flame stretch rate is small. Moreover, it is shown that the tendency to the burning velocity, which is defined by the velocity in minimum point of velocity in direction of nozzle axis, do not have a positive correlation with heat release rate.
一般社団法人日本機械学会の論文
2006-11-23