Experimental study of premixed methane/air gas suppression by sliding porous media with different elasticity coefficients

Based on the self-designed sliding porous media system, the suppression effect of sliding porous devices with different elastic coefficients and different pore diameter on the propagation characteristics of premixed methane/ air explosions with phi = 1 was investigated. The results show that the sliding porous media has a significant inhibition effect on the explosion flame and overpressure, which can reduce the propagation speed and duration of the flame and the maximum value of the downstream overpressure. The advantage of sliding porous media is to increase the contact time and distance between the device and the flame and shock wave produced by explosion, so as to increase the explosion energy consumption and achieve the purpose of explosion suppression.

Automated summary

The sliding porous media system can significantly suppress explosion flame and overpressure, reduce flame propagation speed and maximum overpressure, increase contact time and distance to achieve the purpose of explosion suppression.