4731 火炎伸長による燃焼速度変化に基づく火炎伝播の予測(S55-1 エンジン現象解析-基礎計測と数値計算-(1),S55 エンジン現象解析-基礎計測と数値計算-)

概要

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Relationship between the burning velocity of laminar flames and flame stretch can be evaluated using unstretched laminar burning velocity U_1, and Markstein length L. In this study, numerical simulation of spherical laminar flame propagation are examined on the basis of this relationship. The simulation was carried out for the propane-air mixtures of the equivalence ratio of 0.8 and 1.3, at the mixture pressure of 0.10 and 0.50MPa. The results were compared with corresponding experimental measurements. This method was found to reliably simulate the flame propagation of laminar flame in the case of positive Markstein length. The increase in the burning velocity of unstable flames due to the flame instability, in the case of negative Markstein length, may be estimated from observed differences between experiment and simulation.
社団法人日本機械学会の論文
2006-09-15