Performance of a vehicle-mounted anemometer under cross wind: Simulation and experiment  

作　　者：Bo Sun Guang Chen Jun Chen Xiaobai Li Mingzan Tang Mu Zhong 

机构地区：[1]Key Labor atory of Traffic Safety on Track of Ministry of Education,Central South University,Changsha 410075,Hunan,China [2]Joint International Research Laboratory of Key Technology for Rail Traffic Safety,Central South University,Changsha 410075,Hunan,China [3]National&Local Joint Engineering Research Centre of Safety Technology for Rail Vehicle,Central South University,Changsha 410075,Hunan,China [4]China Railway Urumqi Group Co.,Ltd.,Urumqi 830000,Xinjiang,China

出　　处：《Transportation Safety and Environment》2023年第3期46-59,共14页交通安全与环境（英文）

基　　金：This study was supported by the National Key R&D Program of China(Grant No.2020YFA0710903);the Graduate Student Independent Innovation Project of Central South Univer-sity(Grant Nos.2020zzts111 and 2020zzts117).

摘　　要：Environmental wind measurements are essential for ensuring the operational safety of rail vehicles.In our previous work,al anemometer that can be mounted on the top of a train to achieve real-time measurements of wind speed and direction was proposed based on the pressure distributions around the cylindrical anemometer.However,the flow field on the top of the train is significantly influenced by the train;thus,the measured data might differ from the actual environmental wind parameters,particularly when trains are subjected to windbreak walls.In this study,simulations considering flow fields around trains installed with the proposed anemometer were conducted,and an improved delayed detached eddy simulation approach was adopted.Through simulations,the flow feld at the top of the train was analysed,and the aerodynamic characteristics of the anemometer were investigated.Accord-ingly,relationships between the measured wind characteristics and environmental wind characteristics are presented under various situations herein.Field experiments were performed for the proposed anemometer installed on a certain type of high-speed train along the Nanjiang Railway in China.The results obtained from both the numerical and experimental studies show that the proposed method has high accuracy for measuring environmental wind speed and direction when mounted on the top of a train.

关 键 词：vehicle anemometer windbreak wall CROSSWIND aerodynamic characteristics 

分 类 号：U491[交通运输工程—交通运输规划与管理]