Numerical Simulation of Fire in Library Atrium Based on FDS

Abstract

In order to prevent the fire accident in the comprehensive library, using the fire dynamic simulation software (FDS), taking a comprehensive library of a university as the research object, and taking the atrium self-study area on the second floor with the fastest smoke diffusion as the fire point, the temperature, smoke flow, visibility The distribution characteristics of CO and CO2 volume fraction are analyzed by numerical simulation, and the variation characteristics of each parameter are obtained. The simulation results show that the temperature, visibility and smoke layer height near the fire source have a great impact on the safe evacuation in the process of fire development. Among them, temperature has a decisive impact on personnel safety in the range of about 1m from the fire source. In the range of 5-10 m, visibility has the greatest impact on safe evacuation. The closer to the fire source, the faster the height of smoke layer decreases.