关键词: 蒸气云爆炸, 多能法, 阻塞区

Abstract: Multi-energy method is a typical method for simulating and calculating the parameters of vapor cloud explosion in a constrained space. While in the application steps of multi-energy method, the reasonable division of obstructed region is an important part affecting the calculation results. The application steps of multi-energy method were summarized firstly in this paper, and then the theoretical method of obstructed region division was expounded emphatically. Combined with two engineering cases, the specific steps of determining the obstructed region were explained in detail. This provides technical reference for the simulation of vapor cloud explosion by multi-energy method.

Key words: vapor cloud explosion/VCE, multi-energy method, obstructed region