地铁列车与高速铁路列车交会压力波的仿真研究

发布时间：2019-05-28 00:17

【摘要】：列车在高速会车时产生的空气压力波会给交会车辆的侧窗造成很大的冲击,有可能出现破窗事故,给乘客和列车运行带来安全隐患。基于三维、非定常两方程湍流模型,利用计算流体软件Fluent,对某型地铁车辆与不同型号的铁路高速列车(CRH380A、CRH2、CRH3型)交会时的空气动力学性能进行了数值仿真,得到侧窗上的会车压力波变化曲线。仿真计算结果表明:在地铁列车与铁路高速列车的交会过程中,地铁列车所受到的侧力远大于高速铁路列车所受到的侧力,交会产生的瞬变压力波对地铁列车侧窗的影响也更大。当地铁列车与CRH380A型高速列车交会时,与其和其它两种型号的列车交会相比,地铁列车侧窗所受到的压力波幅值最小,而当地铁列车与CRH2型铁路列车或CRH3型铁路列车交会时,地铁列车侧窗所受到的压力波幅值均较大,其波动的峰峰值也更大。
[Abstract]:The air pressure wave produced by the train during the high-speed rendezvous will have a great impact on the side window of the rendezvous vehicle, and there may be window breaking accidents, which will bring hidden dangers to passengers and train operation. Based on the three-dimensional and unstable two-equation turbulence model, the hydrodynamic performance of a subway vehicle rendezvous with different types of railway high-speed trains (CRH380A,CRH2, CRH 3) is simulated by using the computational fluid software Fluent,. The variation curve of pressure wave on the side window is obtained. The simulation results show that the lateral force of subway train is much larger than that of high-speed railway train in the process of rendezvous between subway train and railway high-speed train. The transient pressure wave produced by the intersection also has a greater influence on the side window of subway train. When the subway train rendezvous with CRH 380A high speed train, compared with the other two types of train, the pressure wave amplitude of the side window of subway train is the smallest, while when the subway train meets with CRH 2 railway train or CRH 3 railway train, The amplitude of pressure wave on the side window of subway train is larger, and the peak and peak value of the fluctuation is also larger.
【作者单位】：西南交通大学牵引动力国家重点实验室;
【分类号】：U298;U270.1

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