Turbulent Burning Velocities of Two-Component Fuel Mixtures of Methane, Propane and Hydrogen

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  • メタン・プロパン・水素の二成分燃料混合気の乱流燃焼速度特性
  • メタン プロパン スイソ ノ 2セイブン ネンリョウ コンゴウキ ノ ランリュウ ネンショウ ソクド トクセイ

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In order to clarify the turbulent burning velocity of multi-component fuel mixtures, both lean and rich two-component fuel mixtures, in which methane, propane and hydrogen were used as fuels, were prepared while maintaining the laminar burning velocity approximately constant. A distinct difference in the measured turbulent burning velocity at the same turbulence intensity is observed for two-component fuel mixtures having different addition rates of fuel, even the laminar burning velocities are approximately the same. The burning velocities of lean mixtures change almost constantly as the rate of addition changes, whereas the burning velocities of the rich mixtures show no such tendency. This trend can be explained qualitatively based on the mean local burning velocity, which is estimated by taking into account the preferential diffusion effect for each fuel component. In addition, a model of turbulent burning velocity proposed for single-component fuel mixtures may be applied to two-component fuel mixtures by considering the estimated mean local burning velocity of each fuel.

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