平行空気流中の液面燃焼における障害物の効果

概要

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The term "film combustion" means the diffusive combustion of fuel gas evaporated from a condensed fuel surface with an oxidizer gas flowing along the surface. The present study aims to gain a fundamental understanding of the effects of separated flow created by an obstacle on stabilization and structure of the diffusion flame. As an obstacle, a rod with diameter d is placed upstream of the fuel surface with its axis perpendicular to the flow direction. The distance L from the fuel surface to the axis of the rod as well as the main stream velocity U_∞ is varied to change the effects of the separated flow on the fuel surface. It is found that under appropriate conditions, a flame moves forward from the fuel surface and is stabilized behind the rod. A map is obtained which describes the state of flame stabilization in the U_∞ plane. Distributions of temperature and main species concentration are measured to elucidate the heat and mass transfer processes in the flame.
一般社団法人日本機械学会の論文
1991-11-25