Combustion of Hydrogen-Air-Steam Mixtures in the Presence of Repeated Obstacles in a Confined Volume

摘要

Flame acceleration experiments were performed in hydrogen-air and hydrogen-air-steam mixtures in a 1.5m-diameter, 5.7m-high cylindrical vessel, fitted with repeated obstales, to investigate the effects of obstacles on combustion behavior. The obstacles were made of 16.5cm-outer-diameter aluminum pipes. The study included a hydrogen concentration range of 10 to 20, steam concentrations of up to 40, obstacle spacing of0.55m to 1.1m, and flow area blockages of 10 and 28. The experiments were performed at an initial temperature of 128#xB0;C and an initial pressure of 100kpa.