早在2002年，法国在修建LGV Esteurop e enne高速铁路的同时，就已经确定了在该线建成后所使用高速列车的主要技术参数和运营特性。随着铁路机车车辆制造技术的进步和发展，负责研制生产新型高速列车的Alstom公司为了更好地满足这条新...早在2002年，法国在修建LGV Esteurop e enne高速铁路的同时，就已经确定了在该线建成后所使用高速列车的主要技术参数和运营特性。随着铁路机车车辆制造技术的进步和发展，负责研制生产新型高速列车的Alstom公司为了更好地满足这条新线的运输需要，采用先进理念和最新技术成果对列车设计方案不断进行修改和完善。每一列TGVPOS电动车组由2辆头车动车和8辆中间附挂车共10辆编组，全长200m。列车设计最高运行速度320km／h，可以在三种牵引供电系统（交流25kV50Hz和15kV16．7Hz，直流1．5kV）的电气化铁路线路上运营，安装异步牵引传动装置。新的动车结构与ThalysPBKA型高速列车动车相近，但技术性能有很大改进。中间附挂车在TGVR6seau型车辆的基础上，展开更多
This study investigates the influence of different pantograph parameters and train length on the aerodynamic drag of high-speed train by the delayed detached eddy simulation(DDES) method. The train geometry considered...This study investigates the influence of different pantograph parameters and train length on the aerodynamic drag of high-speed train by the delayed detached eddy simulation(DDES) method. The train geometry considered is the high-speed train with pantographs, and the different versions have 3, 5, 8, 10, 12, 16 and 17 cars. The numerical results are verified by the wind tunnel test with 3.6% difference. The influences of the number of cars and the position, quantity and configuration of pantographs on flow field around high-speed train and wake vortices are analyzed. The aerodynamic drag of middle cars gradually decreases along the flow direction. The aerodynamic drag of pantographs decreases with its backward shift, and that of the first pantograph decreases significantly. As the number of pantographs increases, its effect on the aerodynamic drag decrease of rear cars is more significant. The engineering application equation for the aerodynamic drag of high-speed train with pantographs is proposed. For the 10-car and 17-car train, the differences of total aerodynamic drag between the equation and the simulation results are 1.2% and 0.4%, respectively. The equation generalized in this study could well guide the design phase of high-speed train.展开更多
文摘早在2002年，法国在修建LGV Esteurop e enne高速铁路的同时，就已经确定了在该线建成后所使用高速列车的主要技术参数和运营特性。随着铁路机车车辆制造技术的进步和发展，负责研制生产新型高速列车的Alstom公司为了更好地满足这条新线的运输需要，采用先进理念和最新技术成果对列车设计方案不断进行修改和完善。每一列TGVPOS电动车组由2辆头车动车和8辆中间附挂车共10辆编组，全长200m。列车设计最高运行速度320km／h，可以在三种牵引供电系统（交流25kV50Hz和15kV16．7Hz，直流1．5kV）的电气化铁路线路上运营，安装异步牵引传动装置。新的动车结构与ThalysPBKA型高速列车动车相近，但技术性能有很大改进。中间附挂车在TGVR6seau型车辆的基础上，
基金Projects(2018YFB1201801-4,2018YFB1201804-2)supported by National Key R&D Program of China。
文摘This study investigates the influence of different pantograph parameters and train length on the aerodynamic drag of high-speed train by the delayed detached eddy simulation(DDES) method. The train geometry considered is the high-speed train with pantographs, and the different versions have 3, 5, 8, 10, 12, 16 and 17 cars. The numerical results are verified by the wind tunnel test with 3.6% difference. The influences of the number of cars and the position, quantity and configuration of pantographs on flow field around high-speed train and wake vortices are analyzed. The aerodynamic drag of middle cars gradually decreases along the flow direction. The aerodynamic drag of pantographs decreases with its backward shift, and that of the first pantograph decreases significantly. As the number of pantographs increases, its effect on the aerodynamic drag decrease of rear cars is more significant. The engineering application equation for the aerodynamic drag of high-speed train with pantographs is proposed. For the 10-car and 17-car train, the differences of total aerodynamic drag between the equation and the simulation results are 1.2% and 0.4%, respectively. The equation generalized in this study could well guide the design phase of high-speed train.
