The Randomness Study Of Room Fire

Fire is a very complex process which including multi-phase turbulence, combustion, and heat transfer, and it also be influenced by variety of random factor. This thesis gives an exploratory analysis to the random influence factor and influence mechanism in the fire process. And it also gives an introduction of the physical model of fire in a brief way. And it includes the computational fluid dynamics (CFD), and the numerical methods of solving the model are provided following it.The equations describing the transport of mass, momentum, and energy by the fire include flows must be simplified to recur the smoke spread and heat transfer processes in fire, so we consider fire as a low Mach number, single-phase, incompressible physical process. This thesis makes use of the field simulation software of FDS and Smokeview to simulate the distribution of temperature in three-dimensional single room fire. After simulating the different situation in which the fire has been placed in different position, we can get a series of numerical result, and give statistical data and data fitting, and then we can get a fire temperature fitting curve. And then we can give a new constructive method and mentality to the fire room temperature-rise process.And at last, we give the feasibility test to the fire temperature-rise curve, and we get the expectation effect at last.