Wave dynamics in an extended macroscopic traffic flow model with periodic boundaries
Wave dynamics in an extended macroscopic traffic flow model with periodic boundaries
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具有周期性边界的扩展宏观交通流模型中的波动力学
DOI:
10.1142/s0217984918501683
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发表时间:
2018-06
影响因子:
1.9
通讯作者:
Fang Chen-Hao
中科院分区:
文献类型:
--
作者:
Wang Yu-Qing;Chu Xing-Jian;Zhou Chao-Fan;Yan Bo-Wen;Jia Bin;Fang Chen-Hao
Motivated by the previous traffic flow model considering the real-time traffic state, a modified macroscopic traffic flow model is established. The periodic boundary condition is applied to the car-following model. Besides, the traffic state factor R is defined in order to correct the real traffic conditions in a more reasonable way. It is a key step that we introduce the relaxation time as a density-dependent function and provide corresponding evolvement of traffic flow. Three different typical initial densities, namely the high density, the medium one and the low one, are intensively investigated. It can be found that the hysteresis loop exists in the proposed periodic-boundary system. Furthermore, the linear and nonlinear stability analyses are performed in order to test the robustness of the system.
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