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Small-Grid Analysis of Evacuation Processes with a Lattice Gas Model for Mixed Pedestrian Dynamics

In: Pedestrian and Evacuation Dynamics 2008

Author

Listed:
  • Yan-fang Wei

    (Shanghai University, Shanghai Institute of Applied Mathematics and Mechanics
    Yulin Normal University, Department of Physics and Information Science)

  • Yu Xue

    (Shanghai University, Shanghai Institute of Applied Mathematics and Mechanics
    Guangxi University, Institute of Physical Science and Engineering)

  • Shi-qiang Dai

    (Shanghai University, Shanghai Institute of Applied Mathematics and Mechanics)

Abstract

Summary 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.

Suggested Citation

  • Yan-fang Wei & Yu Xue & Shi-qiang Dai, 2010. "Small-Grid Analysis of Evacuation Processes with a Lattice Gas Model for Mixed Pedestrian Dynamics," Springer Books, in: Wolfram W. F. Klingsch & Christian Rogsch & Andreas Schadschneider & Michael Schreckenberg (ed.), Pedestrian and Evacuation Dynamics 2008, pages 647-652, Springer.
    • Handle: RePEc:spr:sprchp:978-3-642-04504-2_60
    DOI: 10.1007/978-3-642-04504-2_60
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