隧道内高速列车与轨道附加板气动交互特性研究  

Study on aerodynamic interaction between high-speed train and track accessional panels in tunnel

作　　者：熊小慧[1,2,3] 耿语堂 董天韵 李小白 XIONG Xiaohui;GENG Yutang;DONG Tianyun;LI Xiaobai(Key Laboratory of Traffic Safety on Track of Ministry of Education,School of Traffic&Transportation Engineering,Central South University,Changsha 410075,China;Joint International Research Laboratory of Key Technology for Rail Traffic Safety,Central South University,Changsha 410075,China;National and Local Joint Engineering Research Center of Safety Technology for Rail Vehicle,Changsha 410075,China)

机构地区：[1]中南大学交通运输工程学院,轨道交通安全教育部重点实验室,湖南长沙410075 [2]中南大学轨道交通安全关键技术国际合作联合实验室,湖南长沙410075 [3]轨道交通列车安全保障技术国家地方联合工程研究中心,湖南长沙410075

出　　处：《中南大学学报（自然科学版）》2022年第5期1930-1940,共11页Journal of Central South University:Science and Technology

基　　金：国家重点研发计划项目(2020YFA0710903-1);中南大学研究生自主创新项目(2020zzts111,2020zzts117,2021zzts679);湖南省研究生自主创新项目(CX20200196)。

摘　　要：采用RNG k-ε湍流模型模拟列车运行全过程,研究在隧道运行条件下轨道附加板对隧道内压力、列车风速度及列车气动特性的影响规律以及列车对轨道附加板的气动力作用。研究结果表明:轨道附加板的存在减小了列车运行时的阻力,但导致隧道以及列车表面压力、隧道内列车风风速均有所增加,分别增加了2.5%,3.1%以及4.0%;当列车通过时,轨道附加板所受最大升力随车速增加而显著增大,当列车速度为400 km/h时,轨道附加板所受升力为5133 N。因此,在设计隧道内轨道附加板时,需要考虑稳定其固定装置,保证轨道附加板在服役期间的安全。The RNG k-εturbulence model was used to simulate the whole train operation process,and the influence law of the track accessional plate on the pressure in the tunnel,the slipstream velocity and the aerodynamic characteristics of the train,and the aerodynamic effect of the train on the track additional plate were studied.The results show that the existence of track accessional panels reduces the drag of train running,but leads to the increase of tunnel surface pressure,train surface pressure and slipstream in tunnel by 2.5%,3.1%and 4.0%,respectively.When the train passes,the maximum lift force on the track accessional plate increases significantly with the increase of the speed.When the train speed is 400 km/h,the lift is 5133 N.Therefore,it is necessary to strengthen the fixed equipment of track additional panels in tunnel to ensure the safety of track additional panels during service.

关 键 词：列车空气动力学 高速列车 轨道附加板 数值模拟 

分 类 号：U271[机械工程—车辆工程]