Two dimensional outflows for cellular automata with shuffle updates
Two dimensional outflows for cellular automata with shuffle updates
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DOI：
10.1088/1742-5468/2015/10/p10019
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发表时间：
2015-10-01
影响因子：
2.4
通讯作者：
Appert-Rolland, Cecile
中科院分区：
文献类型：
--
作者：
Arita, Chikashi;Cividini, Julien;Appert-Rolland, Cecile
在这篇论文中，我们探讨了具有随机更新的元胞自动机的二维行为。作为一个测试案例，我们考虑了一个方形房间的行人疏散，该疏散是由具有静态地板场的元胞自动机模型建模的。Shuffle更新的特征是与每个粒子相关联的变量，称为相位，可以解释为行人流框架中阶跃循环中的相位。这里我们还引入了这些阶段的动力学，以便修改模型的属性。我们特别研究了当行人密度增加时发生的低密度和高密度状态之间的交叉，流出物对地板场强度的依赖性，以及出口前队列的形状。最后，我们讨论了这些结果与行人的相关性。
In this paper, we explore the two-dimensional behavior of cellular automata with shuffle updates. As a test case, we consider the evacuation of a square room by pedestrians modeled by a cellular automaton model with a static floor field. Shuffle updates are characterized by a variable associated to each particle and called phase, that can be interpreted as the phase in the step cycle in the frame of pedestrian flows. Here we also introduce a dynamics for these phases, in order to modify the properties of the model. We investigate in particular the crossover between low-and high-density regimes that occurs when the density of pedestrians increases, the dependency of the outflow in the strength of the floor field, and the shape of the queue in front of the exit. Eventually we discuss the relevance of these results for pedestrians.