水素噴流拡散火炎の挙動に関する実験的研究

概要

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The stability of the flame is an important problem of the combustion technology, and lifting/blow-off and stability limits of the flame have already been researched. As for the hydrogen flame, there are a lot of uncertain elements of the combustion characteristic at the flame base. The parameters are co-flow, oxygen concentration, flow rates and so on. Experiments were conducted to investigate the stability limits and flame behaviors for various nozzle diameters from 0.14 to 6.1mm. The nozzle diameter (curvature) at the upstream end of the diffusion flame which is adjacent to the burner rim plays important roles for holding the flame. The inverse diffusion flame (IDF) is formed when the fuel and air streams of a normal round co-flowing diffusion flame (NDF) are reversed. The lifting and blow-off criteria are proposed for the normal diffusion flame (NDF) and the inverse diffusion flame (IDF). The objective of the present study is to get further understanding lifting/blow-off in the inverse diffusion flame (IDF) and present clearer understandings of the processes of the flame holding at the burner rim.
神戸市立工業高等専門学校の論文
2006-03-01