4645 高速噴流拡散燃焼での火炎安定限界と挙動(G06-8 燃焼(2),G06 熱工学)

概要

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It is important to stabilize the flame for the combustion technology, and lifting/blow-off and stability limits of the diffusion flame have already been researched. As for the methane and hydrogen diffusion flame, there are a lot of uncertain elements of the combustion characteristic at the flame-base with increasing the fuel velocity. In this study, the transition behavior from the stable flame to lifting and blow-off is observed experimentally with and without the co-flowing air. The parameters are co-flow velocity, oxygen concentration, flow rates and so on. The results obtained are as follows. The flame lifting occurs easily when the co-flowing velocity is higher or oxygen concentration decrease. The phenomenon of the flame squeezing at the upstream of the fuel is concerned with the fuel velocity.
社団法人日本機械学会の論文
2006-09-15