平面せん断流中の渦と火炎の相互干渉過程の離散渦解析と光学観察(燃焼1,熱工学部門一般講演)

概要

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In this paper the behavior of the propagating flame in the plane premixed shear flow after the spark ignition at the midpoint between two adjacent organized eddies is simulated using the discrete vortex method and is compared with the results of the two-directional and high-speed schlieren observations. In the numerical simulation, the higher uniform mixture velocity is varied from 4.0 m/s to 6.0 m/s at 1.0 m/s intervals with the lower uniform mixture velocity kept constant at 2.5 m/s and the equivalence ratio is varied from φ = 0.7 to 0.9 at 0.1 intervals. Detailed comparison of the results numerically simulated with those experimentally obtained clarifies that not only temporal variation of the flame appearances with the equivalence ratio and the velocity difference but also the selective growth rate agrees extremely well with each other.
2004-09-04