乱流拡散火炎の火炎構造とすす生成・分解特性に及ぼす空気温度の影響--数値シミュレ-ション

概要

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The present work is a continuation of previous work and model effects of combustion air temperature on soot formation-decomposition together with flame structure in turbulent diffusion flme. The main objectives have been to investigate effects of mixture fraction, turbulent kinetic energy and flame temperature on soot formation-decomposition. The following input characteristics are varied the input air temperature (Tair=50°C, 500°C) at constant fuel temperature.<BR>The predicted results are as follows;<BR>(1) With further increase in air temperature (Tair=500°C) of the external stream, the mixing rate is suppressed by the decay of turbulent kinetic energy. The combustion region of dif f usible type is increased.<BR>(2) When the air temperature is increased, both the soot formation and decomposition rates further increase. The final exhaustionn of soot is decreased by the high temperature process at the end of flame.
公益社団法人日本マリンエンジニアリング学会の論文