从控制体积的离散思想出发,利用有限元的加权余量方法,提出了一个新的中观交通流建模方法.并利用此思想建立了基于速度-密度关系宏观交通流LWR模型的中观交通流模型.研究了该中观模型的数值解法并且基于多分辨率仿真系统平台通过C++实现了该算法,通过仿真案例对模型的物理特性、实际效果进行了评价,仿真结果表明:该中观模型的结果符合经典的流量、密度与速度曲线规律与实际场景应用情况.
Based on the weighted residual method and using the discrete ideas of the control volume method,the paper researches the mesoscopic traffic flow models and proposes a novel meso-simulation traffic flow model which is established based on the macroscopic LWR model which depend on the velocity-density relation.Then it studies the numerical solution of the new meso-model and implements the algorithm based on the multi-resolution simulation system platform by C++.Finally,the mesomodel is evaluated by the special scenario and simulation results show that the results of the mesomodel conform to the the physical characteristics among flow,density and velocity and the real application.It has the high theory and application value.