Abstract: To study the combustion characteristics of large oil tank fire, this work established an experimental platform to simulation the combustion behavior of a 200 m³ oil tank fire, simulating oil pool fire on the top of the tank, oil pool fire on the embankment, and flowing fire on the side walls of the tank, whose combustion area reached 361.8 m². The foam—water mist combined with a turbofan was used to study the extinguishing efficiency of this technology. The temperature field and thermal radiation field of the oil tank fire were analyzed. The results show that the application of foam—water mist combined with a turbofan can quickly extinguish the open fire in the burning scene of the oil tank fire, and has a significant cooling effect.

Key words: oil tank fire, combustion characteristics, foam—water mist combined with a turbofan, oil pool fire, flowing fire