This paper experimentally investigates the effect of nitrogen and porous media on the explosion behavior of hydrogen/methane/air mixtures. The study examines the impact of nitrogen volume fraction and the location of porous media (distance to the ignition source) on hydrogen/methane/air mixtures with a fixed hydrogen-to-methane volume ratio of 1:1. The results indicate that the presence of nitrogen and porous media significantly alter explosion dynamics, influencing both flame propagation and peak explosion pressures. The greater the volume fraction of nitrogen and the closer the porous medium is to the ignition source, the more the explosion of the hydrogen/methane/air premixed gas is suppressed. These findings have the potential to prevent the explosion of hydrogen/methane-blended fuels and have significant implications for their practical applications.
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