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2010 | OriginalPaper | Chapter
Small-Grid Analysis of Evacuation Processes with a Lattice Gas Model for Mixed Pedestrian Dynamics
Authors : Yan-fang Wei, Yu Xue, Shi-qiang Dai
Published in: Pedestrian and Evacuation Dynamics 2008
Publisher: Springer Berlin Heidelberg
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Pedestrian flow out of a hall is investigated by using a small-grid lattice gas (LG) model with different maximum velocities. Some dynamical characteristics of the transition from choking flow to decaying flow are found. In the choking-flow region, the flow rate increases with the increase of the fraction of faster pedestrians and the door width. The evacuation time decreases with increasing fraction of faster pedestrians and door width. In addition, the dependence of the average velocity on the mixture fraction and door width is discussed. Finally, the relationship of evacuation time with mixture fraction and door width are obtained.