高速列车通过连通开孔隧道的气动特性数值仿真研究  

Numerical Simulation of Aerodynamic Characteristics of High-speed Train Passing through Tunnel with Perforations

作　　者：高畅 李田[2] 张继业[2] GAO Chang;LI Tian;ZHANG Jiye(Sichuan Railway Transportation Investment Co.,Ltd.,610031,Chengdu,China)

机构地区：[1]四川省轨道交通投资有限责任公司,成都610031 [2]西南交通大学牵引动力国家重点实验室,成都610031

出　　处：《城市轨道交通研究》2021年第7期19-24,共6页Urban Mass Transit

基　　金：国家自然科学基金项目(51605397);四川省科技计划项目(2019YJ0227);牵引动力国家重点实验室自主课题(2019TPL_T02)。

摘　　要：为了减缓高速列车通过隧道引起的压力波动,研究了联络通道对高速列车通过隧道时压力波特性的影响。建立了3节编组高速列车数值仿真计算模型,基于三维非定常可压缩Navier-Stokes方程,以及k-ε方程湍流模型和滑移网格技术,数值模拟了高速列车通过联络通道时隧道的气动特性,研究了设置联络通道对隧道压力波的影响及不同的通道间距对隧道压力波动的影响。研究结果表明:与无联络通道隧道相比,列车通过连通开孔隧道的气动特性得到明显改善;通道对初始压力上升、下降的抑制效果更为明显,对膨胀波的抑制作用更为突出。联络通道的设置使隧道压力波的波形呈现局部锯齿状。In order to slow down the pressure fluctuation caused by high-speed train passing through tunnel,the influence of the connected aisle on the pressure wave characteristics of high-speed train passing through tunnel is studied.A numerical simulation model for three-section formation high-speed train is established.Based on three-dimensional,unsteady,compressible Navier-Stokes equation and k-εtwo-equation turbulence model and slip grid technology,the aerodynamic characteristics of high-speed train passing through tunnel with connected aisle are numerically simulated.Research results show that compared to tunnel without connected aisle,the aerodynamic characteristics of train passing through tunnel with connected aisle is evidently improved;tunnel with connected aisle shows more visible effect on the suppression of initial pressure rise and fall,and the suppression of the expansion wave is more prominent;setting connected aisle makes the pressure wave waveform partially jagged.

关 键 词：高速列车 联络通道 气动特性 长大隧道 

分 类 号：U451.3[建筑科学—桥梁与隧道工程]