Study on flame behaviors induced by spill fire deflagration in adjacent space of hazardous chemical containers

In this study, a model of a container explosion accident of hazardous chemicals was established, and the simulation study was made on the propagation law and temperature field distribution of the overflow fire formed by the accident in the restricted space of the adjacent container facade. According to data collected from on-site investigation, the spill flame characteristics and temperature field distributions of the three types of container openings with different sizes were analyzed in open space. A new air entrainment model where spill fire was triggered under different spacing conditions was then proposed, and the correction factor was introduced to correct the flame height. The results showed that the container opposite to the opening of the blasting container blocked the air entrainment in the vicinity, thus affecting the evolution of spill fire behaviors. With the increase of the spacing, for the smaller spacing conditions, the air entrainment mainly came from the side; the higher flame height was, the greater damage to the superimposed container and the opposite container. For the bigger spacing conditions, the larger air volume came from the front and side, while lower flame height could be observed, indicating that less damage would be imposed on the superimposed container and opposite container, with more thermal damage and destruction seen on the adjacent container. © All Right Reserved.