Aerodynamic Analysis and Optimization of Pantograph Streamline Fairing for High-Speed Trains  

作　　者：Xiang Kan Yan Li Tian Li Jiye Zhang 

机构地区：[1]State Key Laboratory of Rail Transit Vehicle System,Southwest Jiaotong University,Chengdu,610031,China [2]Technical Center,Southwest Jiaotong University Chengdu Design Institute Co.,Ltd.,Chengdu,610031,China

出　　处：《Fluid Dynamics & Materials Processing》2024年第5期1075-1091,共17页流体力学与材料加工（英文）

基　　金：the National Natural Science Foundation of China(12172308,52072319);the Independent Project of State Key Laboratory of Rail Transit Vehicle System(2023TPL-T06).

摘　　要：A pantograph serves as a vital device for the collection of electricity in trains.However,its aerodynamic resistance can limit the train’s running speed.As installing fairings around the pantograph is known to effectively reduce the resistance,in this study,different fairing lengths are considered and the related aerodynamic performances of pantograph are assessed.In particular,this is accomplished through numerical simulations based on the k-ωShear Stress Transport(SST)two-equation turbulence model.The results indicate that the fairing diminishes the direct impact of high-speed airflow on the pantograph,thereby reducing its aerodynamic resistance.However,it also induces interferences in the flow field around the train,leading to variations in the aerodynamic resistance and lift of train components.It is shown that a maximum reduction of 56.52%in pantograph aerodynamic resistance and a peak decrease of 3.38%in total train aerodynamic resistance can be achieved.

关 键 词：PANTOGRAPH FAIRING train aerodynamic numerical simulation 

分 类 号：O24[理学—计算数学]