Research Of Smoke Movement Regulation In Large Space Building Fire

In the numerous disasters , the direct loss that the fire causes is about the fivefold of the earthquake, the frequentness taking place in a kind of every disaster ,fire occupies is the first . The evaluation work of the building which burnt by fire, takes the residual carring capacity as a basis . Residual carring capacity of structure member has close relation extremely with fire form,the flame covered area and the firing time.The course of fire spreading is influnenced directly by smoke movement regulation.At the same time,in the losses that the fire cause, human's injuries and deaths are the most unacceptable things to people. A large number of fire survey materials show: The people dying in the fire majority is directly or indirectly influenced from the fire smoke.for example : the roast of high-temperature smoke,danger of smoke's toxicity to body physiology,obscuration of fire smoke influence people's sight. So it is particularly important to research the smoke movement regulation of building fire.Progress that the development of the computer technology has promoted the fire to be scientific, computer enormous operation ability make to being large-scale or ultra large-scale fire simulation of course calculate, become possible. In this way people can utilize natural science principles such as conservation of mass, conservation of energy and momentum conservation,etc., through changing the initial and border condition constantly, carry on calculating or course simulation of the numerical simulation to the fire, needn't take a large amount of full-scale fire experiment.In this paper,on the basis of carrying on detailed analysis in emergence course and mechanism of the fire, apply the network model to the calculation that the smoke movement regulation of large space building. Use conservation of mass, conservation of energy, resistance law and heat spread, special to large space building ,set up mathematical model of network, regard the Hainan beautiful crown as the embodiment to calculate, discuss the movement regulation of the smoke with the condition of different border in large space building fire. The research results give a background materials for the fire performance fire designed of the large space buildings, play a role in checking to the crowd's scheme of egress in the fire at the same time, promote the development of the fire risk evalution study.