Influence of Obstacles on Flame Propagation and Pressure Development in a Large Vented Tube

摘要

This report describes the results of large scale methane-air explosion tests performed in a vented 50 cubic meters vessel with regularly spaced obstacles in the form of orifice plates providing blockage ratios ranging from 0.16 to 0.84. With no obstacles, the maximum overpressure observed in the tube is approximately 0.1 bar, to be compared with overpressures up to 8.8 bar with repeated obstacles.