摘要
为研究快速地铁列车在隧道内运行时的“列车-隧道”耦合空气动力特性,在杭海城际铁路开展实车试验,分别对列车以100 km/h与120 km/h的速度通过隧道时的车内外压力变化情况进行研究,计算压力峰-峰值、3 s压力变化幅值与1.7 s压力变化幅值,对比列车进隧道与出隧道过程中车内外压力变化情况,分析不同车辆编组位置与不同列车运行速度对车内外压力变化的影响,研究空调机组状态与车内压力变化幅值之间的关系。研究结果表明,快速地铁列车进出隧道过程中压力变化幅值相近;列车进入隧道并在隧道内运行时,尾车车内压力变化速率最快,车外压力峰-峰值从头车向尾车逐渐减小,而车内压力峰-峰值沿车长方向基本不变;当列车速度不同时,车内外压力对比应在无量纲时间下进行,随着列车速度的增大,车内外压力峰-峰值增大,压力变化速率加快;关闭空调机组可以显著减小车内压力变化速率,可为乘客舒适性研究提供参考。
To study the"train-tunnel"coupling aerodynamic characteristics of a fast subway train running in a tunnel,full-scale tests were carried out on the Hangzhou-Haining intercity railway to study the pressure changes inside and outside the train when the train passing through the tunnel at the speeds of 100 km/h and 120 km/h.The peak-to-peak values of the pressure and the amplitudes of the pressure change in 3 s and 1.7 s were calculated.The pressure changes inside and outside the train during the process of entering and exiting the tunnel was compared.The influence of the different train formation types and different train speeds on the pressure changes inside and outside the train were analyzed,the relationship between the state of the air conditioners and the interior pressure change was researched.The research results show that the pressure change amplitudes of the rapid subway trains entering and exiting the tunnel are similar;When the train enters and runs in the tunnel,the interior pressure change rate in the tail car is the fastest.The peak-to-peak value of the exterior pressure gradually decreases from the head car to the tail car,while the peak-to-peak value of the interior pressure remains basically unchanged along the length of the vehicle.The comparison of internal and external pressures of trains with different speeds should be carried out in the non-dimensional time.The peak-to-peak value of the pressure inside and outside the train increases,and the pressure change rate accelerates with the increase of the train speed.Turning off the air conditioners could significantly reduce the interior pressure change rate of the train,which provides a reference for comfort research.
作者
巩延庆
高鸿瑞
刘堂红
GONG Yanqing;GAO Hongrui;LIU Tanghong(CRRC Nanjing Puzhen Co.,Ltd.,Nanjing,Jiangsu 210031,China;Key Laboratory of Traffic Safety on Track,Ministry of Education,School of Traffic&Transportation Engineering,Central South University,Changsha,Hunan 410075,China)
出处
《机车电传动》
北大核心
2022年第2期40-47,共8页
Electric Drive for Locomotives
基金
国家自然科学基金项目(51975591)
国家重大技术装备攻关工程项目(系列化中国标准地铁列车研制及试验)。
作者简介
通信作者:高鸿瑞(1996-),男,博士研究生,研究方向为列车空气动力学与行车安全,E-mail:gaohongrui@csu.edu.cn。
