5008 Influence of Local Burning Velocity on Turbulent Burning Velocity of Hydrogen Mixtures

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  • 5008 水素混合気の乱流燃焼速度に及ぼす局所燃焼速度の影響(S50-2 乱流燃焼の実験と数値シミュレーション(2),S50 乱流燃焼の実験と数値シミュレーション)

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This study is attempted to establish a prediction model of turbulent burning velocity for hydrogen mixtures as a reference of the mean local burning velocity S_L estimated by taking account of the preferential diffusion effect, instead of the laminar burning velocity S_<L0>. The S_L is estimated for the specific mixtures having the same S_<L0> by adding nitrogen to hydrogen-air mixtures, where S_<L0> as well as the equivalence ratio are varied extensively, in order to confirm the effect of u'/S_<L0> on S_L. It is found that accuracy of the proposed simple mode can be improved by using S_L with respect to u'/S_<L0>.

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