横风下高速列车的非定常气动特性及安全性

doi:10.3901/JME.2016.06.124

摘要/Abstract

摘要： 为研究横风下不同路况(平地、路堤、桥梁)运行时的高速列车非定常气动特性及安全性,基于空气动力学和多体系统动力学理论,建立高速列车空气动力学模型和车辆系统动力学模型。采用分离涡模拟(Detached eddy simulation,DES)方法,计算在横风下运行速度为300 km/h列车的周围流场,风速为17.1 m/s,风向与列车运行方向垂直,得到各路况运行时高速列车车体所受非定常气动力的时域特性、频域特性及列车周围非定常流动结构。根据高速列车整车试验规范,以脱轨系数、轮重减载率、轮轴横向力和轮轨垂向力为安全性指标,分析不同路况下列车的运行安全性。结果表明,横风中列车所受气动载荷存在明显的非定常性,各车辆的气动载荷功率谱密度存在明显峰值,气动载荷主频集中在5 Hz以内;复线路堤背风侧运行列车的安全性最差,其次为复线桥梁迎风侧、复线桥梁背风侧、复线路堤迎风侧、平地。

关键词: 多体系统动力学, 非定常气动力, 高速列车, 功率谱密度, 横风

Abstract: In order to study the unsteady aerodynamic characteristics and safety of high-speed trains running in different road conditions (ground, embankment, viaduct) under crosswinds, an aerodynamic model and a vehicle system dynamic model of the high-speed trains are established based on the theories of aerodynamics and multi-body system dynamics．Using Detached Eddy Simulation method, the flow fields around high-speed trains with the running speed of 300 km/h under crosswinds are simulated, the wind speeds are 17.1 m/s, and the directions of winds are vertical to the running directions of trains. The characteristics of the unsteady aerodynamic forces acting on the trains in different road conditions are presented from the numerical results, which include the characteristics of the time domain, the frequency domain, and the unsteady flow structures around the trains. Then, according to the standard of testing of high-speed electric multiple unit on completion of construction, the operational safety of trains running in different road conditions are analyzed using the operational safety indicators of the derailment coefficient, the load reduction rate, the axle lateral force, and the wheel-rail vertical force. The results show that the aerodynamic loads on trains under crosswinds have strong unsteady characteristics and the power spectrum densities of the aerodynamic loads of each vehicle have obvious peak values. The dominant frequencies of the aerodynamic loads concentrated within 5 Hz. The safety of the train running in the leeward of double-track embankment is worst, followed by the windward of double-track viaduct, the leeward of double-track viaduct, the windward of double-track embankment, ground.

Key words: crosswind, high-speed train, multi-body system dynamic, power spectrum density, unsteady aerodynamic force

中图分类号:

U270

张亮, 张继业, 李田, 张亚东, 殷中慧. 横风下高速列车的非定常气动特性及安全性[J]. 机械工程学报, 2016, 52(6): 124-135.

ZHANG Liang, ZHANG Jiye, LI Tian, ZHANG Yadong, YIN Zhonghui. Unsteady Aerodynamic Characteristics and Safety of High-speed Trains under Crosswinds[J]. Journal of Mechanical Engineering, 2016, 52(6): 124-135.

参考文献

[1] HOPPMANN U,KOENIG S,TIELKES T,et al. A short-term strong wind prediction model for railway application：design and verification[J]. Journal of Wind Engineering & Industrial Aerodynamics,2002,90(10)： 1127-1134.
[2] BAKER C J,JONES J,LOPEZ-CALLEJA F,et al. Measurements of the cross wind forces on trains[J]. Journal of Wind Engineering and Industrial Aerodynamics,2004,92(7-8)：547-563.
[3] BAKER C J. The simulation of unsteady aerodynamic cross wind forces on trains[J]. Journal of Wind Engineering and Industrial Aerodynamics,2010,98(2)：88-99.
[4] SUZUKI M,TANEMOTO K,MAEDA T. Aerodynamic characteristics of train/vehicles under cross winds[J]. Journal of Wind Engineering & Industrial Aerodynamics,2003,91(1)：209-218.
[5] DIEDRICHS B,SIMA M,ORELLANO A,et al. Crosswind stability of a high-speed train on a high embankment[J]. Proceedings of the Institution of Mechanical Engineers,Part F：Journal of Rail and Rapid Transit,2007,221(2)：205-225.
[6] 任尊松,徐宇工,王璐雷,等. 强侧风对高速列车运行安全性影响研究[J]. 铁道学报,2006,28(6)：46-50.
REN Zunsong,XU Yugong,WANG Lulei,et al. Study on the running safety of high-speed trains under strong cross winds[J]. Journal of the China Railway Society,2006,28(6)：46-50.
[7] 毛军,马小云,郗艳红. 基于流动模拟和动力学仿真的高速列车横风运行稳定性研究[J]. 北京交通大学学报,2011,35(1)：44-53.
MAO Jun,MA Xiaoyun,XI Yanhong. Research on the running stability of high-speed trains under the cross wind by means of simulation[J]. Journal of Beijing Jiaotong University,2011,35(1)：44-53.
[8] 于梦阁,张继业,张卫华. 平地上高速列车的风致安全特性[J]. 西南交通大学学报,2011,46(6)：989-995.
YU Mengge,ZHANG Jiye,ZHANG Weihua. Wind-induced security of high-speed trains on the ground[J]. Journal of Southwest Jiaotong University,2011,46(6)：989-995.
[9] HEMIDA H,KRAJNOVIC S. Numerical study of the unsteady flow structures around train-shaped body subjected to side winds[C/CD]//Delft University of Technology;European Community on Computational Methods in Applied Sciences (ECCOMAS). ECCOMAS CFD 2006: Proceedings of the European Conference on Computational Fluid Dynamics,Egmond aan Zee,The Netherlands,September 5-8,2006.
[10] 杨志刚,马静,陈羽,等. 横风中不同行驶工况下高速列车非定常空气动力特性[J]. 铁道学报,2010,32(2)：18-23.
YANG Zhigang,MA Jing,CHEN Yu,et al. The unsteady aerodynamic characteristics of high-speed train in different operating condition under cross wind[J]. Journal of the China Railway Society,2010,32(2)：18-23.
[11] 刘加利,张继业,张卫华. 基于大涡模拟的横风下高速列车非定常气动载荷特性[J]. 铁道学报,2013,35(6)：13-21.
LIU Jiali,ZHANG Jiye,ZHANG Weihua. Study on characteristics of unsteady aerodynamic loads of high-speed train under crosswinds by large eddy simulation[J]. Journal of the China Railway Society,2013,35(6)：13-21.
[12] 刘加利,于梦阁,张继业,等. 基于大涡模拟的高速列车横风运行安全性研究[J]. 铁道学报,2011,33(4)：13-21.
LIU Jiali,YU Mengge,ZHANG Jiye,et al. Study on running safety of high-speed train under crosswinds by large eddy simulation[J]. Journal of the China Railway Society,2011,33(4)：13-21.
[13] DIEDRICHS B. Aerodynamic crosswind stability of a regional train model[J]. Proceedings of the Institution of Mechanical Engineers,Part F：Journal of Rail and Rapid Transit,2010,224(6)：580-591.
[14] TRISTAN F,GUNILLA E. An assessment of detached-eddy simulations of unsteady crosswind aerodynamics of road vehicles[J]. Flow,Turbulence and Combustion,2011,87(1)：133-163.
[15] 苗秀娟,高广军. 基于DES的车辆横风气动性能模拟[J]. 中南大学学报,2012,43(7)：2855-2860.
MIAO Xiujuan,GAO Guangjun. Aerodynamic performance of train under cross-wind based on DES[J]. Journal of Central South University,2012,43(7)：2855-2860.
[16] KHIER W,BREUER M,DURST F. Flow structure around trains under side wind conditions：A numerical study[J]. Computers & Fluids,2000,29(2)：179-195.
[17] 中华人民共和国铁道部. TB 10621-2014 高速铁路设计规范[S]. 北京：中国铁道出版社,2014.
Ministry of Railways of the People’s Republic of China. TB 10621-2014 Code for design of high speed railway[S]. Beijing：China Railway Publishing House,2014.
[18] 于梦阁,张继业,张卫华. 桥梁上高速列车的强横风运行安全性[J]. 机械工程学报,2012,48(18)：104-111.
YU Mengge,ZHANG Jiye,ZHANG Weihua. Running safety of high-speed trains on bridges under strong crosswinds[J]. Journal of Mechanical Engineering,2012,48(18)：104-111.
[19] 于梦阁. 高速列车风致安全研究[D]. 成都：西南交通大学,2010.
YU Mengge. Study on the wind-induced security of high-speed trains[D]. Chengdu：Southwest Jiaotong University,2010.
[20] 池茂儒,张卫华,曾京,等. 铁道车辆振动响应特性[J]. 交通运输工程学报,2007,7(5)：6-11.
CHI Maoru,ZHANG Weihua,ZENG Jing,et al. Vibrant response characteristic of railway vehicle[J]. Journal of Traffic and Transportation Engineering,2007,7(5)：6-11.