强横风对高速列车驶入隧道气动效应的影响研究  

Study on influence of strong crosswind on aerodynamic effects ofa high-speed train entering a tunnel

作　　者：王磊[1,2] 张传凯 谭忠盛 骆建军[1] 李宇杰[2] WANG Lei;ZHANG Chuankai;TAN Zhongsheng;LUO Jianjun;LI Yujie(School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China;Beijing Subway Operation Co.Ltd.,Beijing 100044,China;Beijing Subway Engineering Management Co.Ltd.,Beijing 100005,China)

机构地区：[1]北京交通大学土木建筑工程学院,北京100044 [2]北京市地铁运营有限公司,北京100044 [3]北京地铁工程管理有限公司,北京100005

出　　处：《中南大学学报（自然科学版）》2023年第11期4584-4595,共12页Journal of Central South University:Science and Technology

基　　金：北京市地铁运营有限公司科研项目(2022000501000001);国家自然科学基金资助项目(51678036)。

摘　　要：为研究强横风条件下高速列车驶入隧道过程中的气动效应,基于有限体积法理论,建立隧道-高速列车-横风三维数值模型,采用SST k-ω湍流模型进行求解计算,研究高速列车在横风条件下驶入过程中隧道内气动压力和列车风的变化规律,对比分析横风对隧道内流场特性的影响。研究结果表明:在横风作用下,车头、车尾通过时隧道壁面气动压力变化幅值最大,隧道入口处气动压力受横风影响最大,在列车背风侧气动压力受横风影响更加显著;列车迎、背风侧列车风变化规律存在显著差异,迎风侧列车风风速随到入口距离的增加而减小,背风侧列车风风速则与到入口距离的关系不显著;横风对隧道内列车风风速的影响范围有限,隧道入口处列车风风速受横风作用影响最大,当横风风速为30 m/s、车速为350 km/h,距入口超过50 m时,列车同侧空间内列车风风速变化规律基本相同;隧道外流场向列车背风侧偏移,涡旋起始位置由头车流线段转移至隧道入口处,隧道内列车迎风侧大尺度涡旋结构逐渐向迎风侧偏移,并在列车驶入过程中逐渐分解消散,流场特性与无风情形的流场特征显著不同。In order to investigate the aerodynamic effects strong crosswind,a 3D numerical model including tunnel,HST and crosswind was established based on the finite volume method theory,and the SST k-ωturbulence model was adopted for calculation.The distribution characteristics of the flow field around the train during the entry of the train with the crosswind were analyzed,the effects of the crosswind on the transient pressure and the train wind in the tunnel was explored.The results show that the variation amplitude of aerodynamic pressure of tunnel wall is the largest when the head and rear vehicle pass through the tunnel under crosswind,and the aerodynamic pressure at the tunnel entrance is the most affected by crosswind,and the aerodynamic pressure on the leeward side of the train is more significantly affected.Significant differences in the variation rules of windward and leeward side train wind exist when trains enter the tunnel.The train wind in windward side space decreases with the increase of the distance to the entrance,while the train wind in leeward side space has no significant relationship with the distance to the entrance.The influence range of crosswind on train wind in tunnel is limited,and the train wind at tunnel entrance is most affected by crosswind.When the crosswind speed is 30 m/s and the train speed is 350 km/h,the train wind variation law in the same side space of the train is basically the same after the distance from the entrance exceeds 50 m.The lateral flow field of the tunnel is offset to the leeward side of the train,and the initial position of the vortex structure on the leeward side is transferred from the head streamlined segment to the tunnel entrance,while the large-scale vortex structure on the windward side of the train in the tunnel is gradually offset to the windward side,and gradually decomposes and dissipates during the process of the train entering the tunnel.The characteristics of the flow field are significantly different from that in the case of no crosswind.

关 键 词：高速列车 横风 隧道 气动压力 列车风风速 流场 

分 类 号：U25[交通运输工程—道路与铁道工程]