502 天井面に形成される層流境界層拡散火炎の観測と温度測定

概要

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To explore the structures and characteristics of diffusion flames in laminar boundary layers along ceiling surfaces, aspects of the flow field, flame shapes and temperature distributions have been examined for the flames established on ceiling surface with methane injection. In the small free-stream velocity region, a blow off limit appears as fuel injection velocity increases, and a separation region ahead of the leading flame edge is observed clearly in most of stable flame region. As the free-stream velocity decreases and the fuel injection velocity increases, the quenching distance near the leading flame increases and the location of the leading flame shifts upstream. Although the shape of the diffusion flame depends on the free-stream velocity of air stream, it is almost independent of the fuel gas velocity. The structures and the characteristics of the stationary diffusion flame in a laminar boundary layer on a ceiling surface were made clear to a further extent.
一般社団法人日本機械学会の論文
2000-09-08