5003 乱流中での水素・空気予混合気の着火及び火炎伝播機構(S50-1 乱流燃焼の実験と数値シミュレーション(1),S50 乱流燃焼の実験と数値シミュレーション)

概要

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Direct numerical simulations of ignition and propagation of hydrogen-air premixed flame in two-dimensional homogeneous isotropic turbulence are conducted to investigate effects of turbulence on the ignition and propagation process. In the ignition process, eddies stretch the high temperature region and disturb its evolution. In the propagation process, strong eddies prevent propagation of the flame, and the flame propagates along the edge of eddies. Ignition delay tends to increase with the increase of mean strain rate in the initial high temperature region. If the high temperature region is separated by the strong eddies in the ignition process, the ignition delays significantly.
社団法人日本機械学会の論文
2006-09-15