A floor field real-coded lattice gas model for crowd evacuation
A floor field real-coded lattice gas model for crowd evacuation
复制标题
用于人群疏散的地面场实编码格子气体模型
DOI：
10.1209/0295-5075/119/10003
复制
发表时间：
2017-07
期刊：
影响因子：
1.8
通讯作者：
Dong L. Y.
中科院分区：
文献类型：
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作者：
Tao Y. Z.;Dong L. Y.
本文提出了一种修正的实数编码格子气体(RLG)模型，其中引入了底场。为了更准确地确定行人的方向，在更精细的网格上计算了地面场。因此，与现有的离散模型相比，行人的运动具有更多的自由度。此外，步行速度由行人前面的可用空间以多步的方式确定。因此，该模型能够准确地描述行人的运动。然后，通过与已有测量数据的比较，对模型参数进行了标定。最后，我们使用这个模型来研究房间的正常疏散。得出以下结论：1)在单出口房间中，对于给定的出口宽度大于0.6m，平均比流量随着初始行人数量的增加而增加。对于给定的初始行人数量，当出口宽度增加时，比流量先增加后减少。2)双出口房间只有在总宽度大于1.6m时才比单出口房间的疏散时间短。
In this paper we present a modified real-coded lattice gas (RLG) model in which the floor field is introduced. The floor field is calculated on finer lattices in order to determine the pedestrians' direction accurately. Thus, the pedestrian's motion has many more degrees of freedom compared with existing discrete models. Furthermore, the walking speed is determined by the available space ahead of the pedestrians in a multi-step way. Therefore, the model can precisely describe the pedestrians' motion. Then, we calibrate model parameters by comparing with the existing measured data. Finally, we employ this model to investigate normal evacuation from a room. The conclusions are as follows: 1) In the single-exit room, for a given exit width larger than 0.6 m, the average specific flow increases with the initial number of pedestrians. For a given initial number of pedestrians, the specific flow increases first and then decreases when the width of the exit increases. 2) The evacuation time of the two-exit room is less than that of the single-exit room only when the total width is greater than 1.6 m.
DOI：
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发表时间：
1965-06
期刊：
--
影响因子：
--
作者：
J. Drake;J. Schofer;A. May
通讯作者：
J. Drake;J. Schofer;A. May