Numerical Simulation on Temperature Field of Long Narrow Confined Space Fire under Negative Pressure Ventilation Condition

In this paper, the geometric model, combustion model and the initial and boundary conditions were determined by the actual long narrow confined space. The variation of the temperature field at different time were studied, the temperature distribution law of long narrow confined space were simulated by detection points, which including the dome temperature variation at different time, and the temperature distribution law in the horizontal and vertical direction, the law of temperature distribution in the three directions were studied when the simulation was 120s. The study provided reference for evacuation and rescuing of long narrow confined space fire under the negative pressure ventilation condition.