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arXiv 1206.3084physics.soc-phnlin.CG
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元胞自动机模型中行人逆流的定量分析

Quantitative analysis of pedestrian counterflow in a cellular automaton model

Stefan Nowak, Andreas Schadschneider

摘要:

行人动力学表现出各种集体现象。本文研究了地面场元胞自动机模型中的双向行人流。在某些条件下,观察到泳道形成。虽然它经常被定性研究,例如,作为对一个模型的现实性的检验,无论是从经验上还是从理论上,几乎都没有定量的结果。作为定量分析的基础,我们引入了一个序参量,它是从胶体悬浮液的分析。这允许确定系统的相图,其中可以区分四种不同的状态(自由流、无序、车道、交通堵塞)。虽然形成的车道数量是波动的,但车道的特征是典型的密度。结果发现,基本地板场模型高估了一个僵局的趋势相比,实验界限。因此,引入了一种预测机制,降低了干扰概率。

英文摘要:

Pedestrian dynamics exhibits various collective phenomena. Here we study bidirectional pedestrian flow in a floor field cellular automaton model. Under certain conditions, lane formation is observed. Although it has often been studied qualitatively, e.g., as a test for the realism of a model, there are almost no quantitative results, neither empirically nor theoretically. As basis for a quantitative analysis we introduce an order parameter which is adopted from the analysis of colloidal suspensions. This allows to determine a phase diagram for the system where four different states (free flow, disorder, lanes, gridlock) can be distinguished. Although the number of lanes formed is fluctuating, lanes are characterized by a typical density. It is found that the basic floor field model overestimates the tendency towards a gridlock compared to experimental bounds. Therefore an anticipation mechanism is introduced which reduces the jamming probability.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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