双层动车组列车风特性研究  

Research on Wind Characteristics of Double-deck Electric Multiple Units Trains

作　　者：王业腾 张超 白夜 孙振旭[1] WANG Ye-teng;ZHANG Chao;BAI Ye;SUN Zhen-xu(Key Laboratory for Mechanics in Fluid Solid Coupling Systems,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China;Locomotive&Car Research Institute,China Academy of Railway Sciences,Beijing 100081,China;Beijing Zongheng Electro-Mechanical Technology Co.,Ltd.,Beijing 100094,China)

机构地区：[1]中国科学院力学研究所流固耦合系统力学重点实验室,北京100190 [2]中国铁道科学研究院集团有限公司机车车辆研究所,北京100081 [3]北京纵横机电科技有限公司,北京100094

出　　处：《科学技术与工程》2023年第10期4064-4071,共8页Science Technology and Engineering

基　　金：国铁集团系统性重大课题(P2021J003);中国铁道科学院集团有限公司院基金重点课题(2020YJ198)。

摘　　要：列车行驶过程中会诱导周围空气流动形成列车风,较大强度列车风会危及行人和轨道旁工作人员的安全,甚至会卷起附近的货物和杂物。通过数值模拟的方法研究不同行驶速度的五编组双层车厢动车组周围的流场结构和列车风。结果表明:列车风主要由尾流区域涡脱落诱导产生,头车流线型区域、转向架等附属结构和地面效应对诱导列车风也有重要作用。列车周围靠近地面的区域受到附属结构和地面效应直接影响,列车风强度大于远离地面的区域。依据TSI 130—2014,行驶速度在200 km/h及以下速度级的双层车厢动车组符合列车风风速的安全标准,行驶速度250 km/h及以下速度级的双层车厢动车组符合车头压力脉冲要求。During the running of the train,the surrounding air is induced to form a train wind,which could endanger the safety of staff and pedestrians beside the track,and even roll up nearby goods and debris.Numerical simulation was used to study the flow field structure and train wind around double-deck EMU(electric multiple units)with different running speeds.The results show that the train wind is mainly induced by the vortex shedding in the wake area.Moreover,the streamlined area of the leading car,the bogie,and the ground effect also play an essential role in the train wind.The area close to the ground is directly affected by auxiliary structures and ground effects,and the train wind intensity is greater than the area far from the ground.According to TSI 1302—2014,the double-deck EMU meets the safety standard of the train wind when the speed is not more than 200 km/h,and meets the pressure pulsation requirements when the speed is not more than 250 km/h.

关 键 词：双层动车组 空气动力学 列车风 流场结构 

分 类 号：O355[理学—流体力学]