%0 Journal Article
%T 线间距对交会压力波的影响研究<br>Influence of line spacing on the intersection pressure wave
%A 魏洋波
%A 梁习锋&lt
%A br&gt
%A WEI Yangbo
%A LIANG Xifeng
%J 铁道科学与工程学报
%D 2017
%X 基于三维、非定常雷诺时均N-S方程和标准k-ε双方程湍流模型，采用滑移网格技术，对高速列车明线交会及隧道内交会时的空气流场进行数值模拟。研究不同线间距对高速列车交会压力波的影响。研究结果表明：明线交会压力波幅值随线间距的减小而增大，线间距从4.6 m变为4.4 m时，交会压力波幅值增大约8.3%；线间距从4.4 m变为4.2 m时，交会压力波幅值增大约8.5%；隧道交会压力波头波幅值随线间距的减小而增大，对非交会时段隧道压力波影响不大，线间距从4.6 m变为4.4 m时，车体表面测点交会压力波头波幅值增大5.7%；线间距从4.4 m变为4.2 m时，交会压力波头波幅值增大5.8%；隧道壁面测点压力波幅值增加约2%，且隧道内2车交会，靠近交会位置的测点压力变化要远大于远离交会位置的测点。<br>Based on three-dimensional, unsteady Reynolds-averaged N-S equations and standard two-equation turbulence models, the complex air flow field of high-speed train was simulated by sliding grid technology. The influence of the change of line spacing on the pressure wave of high-speed train intersection was studied. The results show that the amplitude of the pressure wave increases with the decrease of the line spacing. The amplitude of the intersection pressure wave increases by 8.3% when the line spacing changes from 4.6 m to 4.4 m, and the amplitude of the intersection pressure wave increases by 8.5% when the line spacing changes from 4.4 m to 4.2 m. The amplitude of the intersection pressure wave increases with the decrease of the line spacing, which has little effect on the pressure wave of the whole tunnel. When the line spacing changes from 4.6 m to 4.4 m, the amplitude of the intersection pressure wave crest increases by 5.7%. When the line spacing varies from 4.4 m to 4.2 m, the amplitude of the intersection wave increases by 5.8%. The pressure amplitude of the tunnel measuring point increases by about 2%. When two high-speed train passing by each other, the amplitude of the intersection wave near the intersection area is far greater than the area which is far away from the intersection area
%K 高速铁路
%K 线间距
%K 交会压力波
%K 数值模拟
%K 动模型&lt
%K br&gt
%K high-speed railway
%K line spacing
%K intersection pressure wave
%K numerical simulation
%K moving model
%U http://www.jrse.cn/paper/paperView.aspx?id=paper_317485