中文摘要：

针对交通流模型的数值求解和大量数据处理问题,以有限元法为基础,从流体与交通流的比拟中,分析了交通流的可压缩性和粘性.将交通流参数与流体参数进行了对比.从交通流是无旋流动的机理出发,引入了交通流的势函数,建立了交通压力的数学模型.基于流体有限元的思想对交通流进行了研究.在一定速度条件下,用ANSYS-FLOTRAN仿真了车道变换时的车流变化情况.通过软件后处理模块,对结果进行了讨论,结果显示：ANSYS-FLOTRAN可以较好的模拟交通流状况.

英文摘要：

According to the numerical solution and the massive data handling problem of traffic flow model,based on the finite element method,from fluid and traffic flow analogy,the traffic flow compressibility and viscosity are analyised.the traffic flow parameters and fluid parameters are compared.From the traffic flow is irrotational flow principle,the traffic flow potential function are introduced,established the mathematical model of the transportation pressure is established in order to pave the way to finite element analysis for the traffic flow.Traffic flow characteristics are deeply analyzed based on fluid finite element ideas.Under a certain speed condition of lane changing,simulation of the change of the traffic flow with ANSYS-FLOTRAN.Through post-processing module,the results are discussed.The results show： ANSYS-FLOTRAN can better simulate traffic flow situation.