Effect of attractive interaction on instability of pedestrian flow in a two-dimensional optimal velocity model
Effect of attractive interaction on instability of pedestrian flow in a two-dimensional optimal velocity model
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DOI：
10.1103/physreve.77.016105
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发表时间：
2008-01-01
影响因子：
2.4
通讯作者：
Sugiyama, Yuki
中科院分区：
文献类型：
--
作者：
Nakayama, Akihiro;Hasebe, Katsuya;Sugiyama, Yuki
我们在二维最优速度模型中加入了吸引相互作用，并在线性近似下研究了均匀流动的稳定性。在这个模型中存在一种不同类型的不稳定性。通过数值模拟，给出了相图和各相内的流动特性。由于新的不稳定性在低密度下出现了一个新的阶段，这种不稳定性可以作为生物群体形成机制的候选。
We incorporate an attractive interaction in a two-dimensional optimal velocity model and investigate the stability of homogeneous flow in the linear approximation. There exists a different type of instability in this model. We show the phase diagram and the behavior of the flow in each phase by numerical simulations. A new phase due to the new instability appears at low density, and the instability can be a candidate of the group formation mechanism of organisms.