The Characteristic Of Compartment Fires With Opening

Compartment fires study always constructs the key point in the research of building fires. Because of the limited space of a compartment, the fire occurs, its development, the gas gathers, spreads and the flame profile, all have totally different characteristic with open space. At present, the theory of the room fire's field simulation is in the stage which the influencing factor is occupying the key point, the achievement accumulated is developing to all-round factor step by step.This article utilized the fire simulate software FDS to conduct the simulator study to the ISO9705 standard room fire. At first, different liquid fuel is assigned. The result is: The surface of liquid fuel is more important to heat release rate. When we use FDS to simulate the liquid reactant, before flashover occurs, the bigger the burning surface is used, the steadier the heat release pre unit is. If we guaranteed such conditions, the result will be more reliable. Then simulates the place far away from the fire (the door for instance).Through the contrast of simulation's result and test's, it shows: the curve's general trend of the two results is consistent, it conforms to the theory result. The error certainly does not affect its project serviceability, although a little difference at maximum temperature and speed. Finally, we change nothing unless heat release rate, the result is: the larger the heat release is, the faster the pressure laminated and the field achieved steady. Correspondingly, velocity and temperature is increasing, the neutral plane's height conforms to the theory result.The content of this paper applies some reference about inspecting the entire change of compartment field though the research of open far away from the fire, and thorough discussion and the practice about using the software FDS to simulate compartment fire also.