Numerical Simulation of the Propagation Characteristics of Blast Shock Wave by the Variation of Roadway Section

In order to explore the influence of section change of roadway on the development of shock wave in gas explosion accident.Based on the k-c turbulence model, a numerical simulation study of the effect of different abrupt reduction angle a on the propagation characteristics (overpressure, etc.) of the impact wave within the variation of the roadway cross section was carried out using fluent software. The results show that: a has obvious effect on the propagation distance of shock wave in the roadway. With the increase of a angle, the effect of oblique pressure in the roadway on the vortex suppression is more obvious.