Study on Exit Flow Rate of an One-Exit Room

Abstract

Safety evacuation design is a key content for building fire safety design. In this paper, we apply the CAFE model to conduct an one-exit room simulation. And then we establish the regression equation of exit flow rate considering the factors of the exit width, the size of the room, the location of the exit and the pedestrian density. So as to find the effect of the exit location on the exit flow rate, we analyze the correlation of the two variables. It is found that the exit flow rate of large room is easily affected by the exit location. And it proves that the exit flow rate decreases with the increase of the exit location. At last we study the probability distribution of the number of pedestrians evacuating through the exit and list some reasons why the exit flow rate decreases with the increasing exit width.