| 含时空扰动的一个城市交通流离散模型 |
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| 引用本文： | 沙春宏,化存才.含时空扰动的一个城市交通流离散模型[J].昆明理工大学学报(理工版),2008,33(3):119-121. |
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| 作者姓名： | 沙春宏 化存才 |
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| 作者单位： | 1. 昆明理工大学应用技术学院,云南昆明,650093
2. 云南师范大学数学学院,云南昆明,650092 |
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| 基金项目： | 教育部春晖计划项目
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昆明理工大学校青年自然科学基金 |
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| 摘 要： | 交通流问题是当今社会正面临的一个严峻问题,对交通流问题的研究有着重要的现实意义.根据车辆跟驰模型和流体动力学模型的建模思想,采用宏观和微观相结合的方法,建立了一个含时空扰动因子的城市交通流离散模型.同时,设计了2个有红绿灯路口的交通流算例,并将所建立的模型应用于该算例的数值模拟,结果表明:所建立的模型能够较好地模拟实际交通流的许多重要的基本特征.
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| 关 键 词： | 交通流模型 数值模拟 道路交叉口 城市交通 |
A New Discrete Model for Urban Traffic Flow with a Space-Time Perturbation |
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| SHA Chun-hong,HUA Cun-cai.A New Discrete Model for Urban Traffic Flow with a Space-Time Perturbation[J].Journal of Kunming University of Science and Technology(Natural Science Edition),2008,33(3):119-121. |
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| Authors: | SHA Chun-hong HUA Cun-cai |
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| Abstract: | Traffic flow is a rigorous problem facing the society at present.It is therefore of great practical significance to study this problem.Based on the ideas of car-following models and fluid dynamics models, a new discrete urban traffic flow model is established in this paper by combining micro models with macro models of traffic flow.Through analysis of the perturbations,two traffic-flow examples with traffic lights are designed.The new model is verified and applied by numerical simulation,and it is shown through the results that the model can simulate some important fundamental properties of the practical traffic-flow better. |
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| Keywords: | traffic flow models numerical simulation intersection urban traffic |
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