Experimental study and numerical simulation on mechanism of explosion in closed space

The static pressure of an inner explosion blast wave was corrected by calculating the explosive gas and the explosion induced heat. The experimental results indicate that the corrected simulation results are more closed to the test results. Inner explosions in three different structures with different mass of charges were simulated. The three structures are single room without gate, single room with a gate and two rooms with a gate. The calculation indicates that the overpressures of the blast waves in single room have a similarity. In the case of two rooms with a small mass of charge, the blast waves have a similarity, but in the case of two rooms with a large mass of charge, the blast waves have no similarity.