Hydrodynamic Modeling Of Traffic Flow And Energy Analysis Considering Several Problems

With the vigorous development of science and technology,the quality of people’s lives is increasing,and the number of cars is increasing.The speed of urban road infrastructure construction is far from meeting the growth rate of traffic demand.A series of traffic problems such as traffic congestion,traffic accidents,environmental pollution,and excessive energy consumption have arisen.The macro traffic simulation system simulates the overall shape of the traffic flow by establishing a road network model and a dual-flow model,and analyzes the nonlinear density wave phenomenon of the traffic flow during the simulation process,and then studies the formation mechanism of traffic flow congestion.It provides an experimental platform for the analysis of traffic characteristics to alleviate traffic congestion and other related research,as well as a theoretical basis for the goal of building a transportation powerhouse.The basic characteristics of driver behavior,urban road environment,interaction between vehicles,and the technical performance of the vehicle itself all affect the stability of the overall flow of road traffic at all times.Therefore,based on the basic characteristics of the traffic system,this paper improves the existing model,and studies the self-stabilizing effect of traffic flow under various factors such as driver characteristics,road conditions,and vehicle technology from a macro perspective.The main work of this article is as follows: First of all,the driver’s characteristics,road conditions,vehicle technology and other influencing factors are used to make a reasonable correction to the full speed difference model.At the micro level,the influence of factors such as driver’s characteristics,curves and slopes in urban road environments,and the opening angle of vehicle electronic throttles on traffic flow,a micro car-following model is established.A new hydrodynamic model is proposed through the transformation relationship between macro and micro models.Secondly,the linear stability analysis of the model is performed using small disturbances to obtain the neutral stability conditions and stable regions of the model.Then,through nonlinear analysis,the KdV equation and solution that can describe the traffic flow density wave near the stability curve are derived.Finally,the model is simulated by Matlab.The results of the numerical analysis show that the driver characteristics and the mean-field velocity difference not only promote to improve the stability of the traffic flow,but also reduce the energy consumption of the transportation system.And different road conditions and electronic throttle angles will also have a certain impact on the stability of traffic flow.