Effect of opening pressure and area blockage due to obstacles on vented natural gas explosion

The computational fluid dynamics (CFD) software FLACS is used to study the distribution of the explosion overpressure and temperature at various values of the vent opening pressure and obstacle area blockage in a typical room. The results show that obstacles cause an indoor explosion flame, severely deforming and destroying the shape of an external combustion flame. The indoor peak overpressure and peak temperature positively affect the opening pressure and obstacle area blockage. These two factors have the synergistic effect on the overpressure of the indoor gas explosion and high-temperature hazards, which exacerbates the disaster; however, in the presence of obstacles, the effect of the opening pressure on the explosion overpressure and temperature disasters is not clearly evident. Thus, indoor obstacles have a two-sided effect on the secondary external explosion and the propagation of indoor flame during a vented explosion
  Автор:  Pang L., Jin M., Yan K.
Ключевые слова:  gas explosion, vented explosion, obstacles, opening pressure
Стр:  145