Pedestrian flow through multiple bottlenecks

被引：54

作者：

Ezaki, Takahiro ^{[1
]}

Yanagisawa, Daichi ^{[2
]}

Nishinari, Katsuhiro ^{[3
]}

机构：

[1] Univ Tokyo, Sch Engn, Dept Aeronaut & Astronaut, Bunkyo Ku, Tokyo 1138656, Japan

[2] Ibaraki Univ, Coll Sci, Mito, Ibaraki 3108512, Japan

[3] Univ Tokyo, Adv Sci & Technol Res Ctr, Meguro Ku, Tokyo 1538904, Japan

来源：

PHYSICAL REVIEW E | 2012年 / 86卷 / 02期

关键词：

SIMULATION; MODEL;

D O I：

10.1103/PhysRevE.86.026118

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We investigate the dynamics of the evacuation process with multiple bottlenecks using the floor field model. To deal with this problem, we first focus on a part of the system and report its microscopic behavior. The system is controlled by parameters of inflow and the competitiveness of the pedestrians, and large inflow leads to a congested situation. Through simulations, the metastable state induced by conflicts of pedestrians is observed. The metastability is related to the phase transition from free flow to congestion. The critical condition of the transition is theoretically derived. In addition, we give simulation results of situations with multiple bottlenecks. They imply that local improvement of pedestrian flow sometimes adversely affects the total evacuation time, and that the total optimization of the system is not straightforward.

引用

页数：7

共 16 条

[1] Simulation of pedestrian dynamics using a two-dimensional cellular automaton [J].