Three Dimensional Field Simulation Analysis Of The Fire Disaster In A Single Room

Fire disaster is one of the most frequently happened and extremely destructive disasters. Researching the fire disaster's occurrence, development and forecasting its risk is the key to effectively prevent and suppress the fire disaster. Modeling and applying the domestic and foreign theory and experimental achievement of the haze proliferation domain in the constructions, and introducing the field model FDS(Fire Dynamics Simulator) developed by NIST(National Institute of Standard Technology). The field simulation analysis in view of the single room fire has been carried on. This software that based on the advanced LES(large Eddy Simulation) principle is a kind of computational hydrodynamics model which is taking the fluid athletic field as the main simulated object of the fire based on the advanced large eddy simulation theory.At present, there are three kinds of matured mathematical models of the fire haze movement, The Network Model, the Region Model and the Field Model respectively. This article carries on the fire disaster occurred in some single room through the Field Model. Having studied the haze's occurrence, development and proliferation rule when the fire haze occurred, and observed the distributed characteristic of the temperature field in the fire room.Take some single room as the simulated fire room, and doing detailed field simulation analysis to the fire haze characteristic in the room. The writer does value mold to the fire haze under different burning rate. As the heat release rate getting bigger, the temperature of the heat haze in the room increases faster.The temperature of the heat haze in the single room is distributed into minutes obviously. We can change the heat haze into two separate parts, the heat haze and the cold air, and the surface of the ventilation has extremely great influence on the development of the fire, the bigger the surface, the greater the fire developed, the higher the upper temperature, and also the whole room's temperature.We simulate the fire haze process with FDS in the researching process of the room fire, describing and analyzing the distributed characteristic of the calorific value, the haze density and the temperature field, and promulgating the essence of the single room fire. There is certain reference value regarding to the fire controlling research.