定温触媒線を用いた触媒燃焼による超音速乱流混合の評価方法

概要

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Supersonic combustion using catalytic wire at constant temperature in a cold supersonic flow field was investigated in a square duct with a backward-facing step. The free stream Mach number was of M_m=1.81. Hydrogen was injected transversely behind a backward-facing step into a cold air free stream. The heat release due to the catalytic combustion has no effect of the temperature of catalyst. It indicates that the reaction rate of the catalytic combustion observed in this study was determined by the consentration of H_2 and/or O_2 on the surface of the catalyst. The spatial distribution of heat release due to the catalytic combustion in supersonic turbulent mixing layer, that corresponds to the spatial distribution of consentration of H_2 and or/O_2 in local, was obtained. It was found that there exists the most suitable position for the supersonic combustion at the outer edge of mixing layer.
一般社団法人日本機械学会の論文
1998-03-25