乱流予混合火炎における火炎面の挙動とガス流速(熱工学,内燃機関,動力など)

概要

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An attempt has been made to examine the flame-flow interaction in turbulent premixed flames in a reaction sheet regime. Vectors of the flame-front movement and gas velocity have been simultaneously measured by use of a two-color, four-beam LDV system and a three element electrostatic probe at two positions in a turbulent flame brush, i. e., on the center line and off axis positions. On the center line, velocity vectors of the flame-front movement are distributed symmetrically wih the burner axis, independently of whether the flame front passes the measuring position in the burnt-to-unburnt or unburnt-to-burnt direction. Off axis, velocity vectors of the flame-front movement are distributed toward the burner axis when the flame front passes the measuring position in the unburnt-to-burnt direction. They are distributed away from the burner axis, when the flame front passes the measuring position in the burnt-to-unburnt direction. When the flame front passes the measuring position in the burnt-to-unburnt direction, the axial component of the gas velocity is smaller in the unburnt mixture. When the flame front passes the measuring position in the unburnt-to-burnt direction, on the other hand, the axial component of the gas velocity is smaller in the burnt gas.
一般社団法人日本機械学会の論文
2003-04-25