乱流予混合V型火炎の火炎面の挙動(熱工学,内燃機関,動力など)

概要

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3-D Movement of Flame Fronts in a Turbulent Premixed V Flame has been examined at two positions, i.e., the highest position and half height of the highest posion in the turbulent flame brush. In the V flame, the unburnt mixture in the outer side and the burnt gas is in the inner side of the burner. The average gas flow is from the inner side to the outer side because of the average gas expansion occuring not only upward but also outward. When the flame front moves in the unburnt-to-burnt direction, it moves from the inner side to the outer side, follow the gas flow. When the flame front moves in the burnt-to-unburnt direction, it moves from the outer side to the inner side, against the gas flow. As the result, the magnitude of the velocity vectors of the flame front in the unburst-to-burnt direction are larger than those in the burnt-to-unburnt direction. The axial component of the velocity of the flame front in the unburnt-to-burnt direction can be negative.
社団法人日本機械学会の論文
2006-09-25