In order to research the aerodynamic performances of a train subjected to different types of wind, the aerodynamic performances of the train under the uniform wind and exponential wind are numerically simulated, respectively. The train aerodynamic model is established for the numerical simulation, and grid independence is made for selecting the appropriate computing grid. The effect of different types of crosswind on the incoming flow of the windward of the train, the aerodynamic forces of the train, pressure distribution on the train and flow field around the train are investigated. Comparing to the exponential wind, the incoming flow velocity of the windward of the train subjected to the uniform wind is larger, and the side force and overturning moment of the train are about 18% larger than those of the train subjected to the uniform wind. By comparing the differences in the aerodynamic performances of the train running on the flat ground and embankment, it is found that the aerodynamic performance of the train is worse when the train is running on the leeward side of the embankment. Results show that there are considerable differences in aerodynamic performances of the train subjected to the uniform wind and exponential wind. The lateral force and overturning moment of the head car are largest and the running safety is the worst among all cars. The aerodynamic forces of the train running on the leeward side of the embankment are larger than those of the train running on the flat ground.
WANG Zheng
,
LI Tian
,
ZHANG Jiye
. Research on Aerodynamic Performance of High-speed Train Subjected to Different Types of Crosswind[J]. Journal of Mechanical Engineering, 2018
, 54(4)
: 203
-211
.
DOI: 10.3901/JME.2018.04.203
[1] 杨明智,袁先旭,周丹,等. 强横风下青藏线棚车气动性能研究[J]. 铁道科学与工程学报,2008,5(2):75-78. YANG Mingzhi,YUAN Xianxu,ZHOU Dan,et al. Aerodynamic forces acting on a box car running onQinghai-Tibet railway under strong cross-wind[J]. Journal of Railway Science and Engineering,2008,5(2):75-78.
[2] 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.
[3] 田红旗. 列车空气动力学[M]. 北京:中国铁道出版社,2007. TIAN Hongqi. Train aerodynamics[M]. Beijing:China Railway Publishing House,2007.
[4] SUZUKI M,TANEMOTO K,MAEDA T. Aerodynamic characteristics of train/vehicles under cross winds[J]. Journal of Wind Engineering & Industrial Aerodynamics,2003,91(1-2):209-218.
[5] BAKER C J,JONES J,LOPEZ-CALLEJA F,et al. Measurements of the cross wind forces on trains[J]. Journal of Wind Engineering & Industrial Aerodynamics,2004,92(7):547-563.
[6] Baker C J. The simulation of unsteady aerodynamic cross wind forces on trains[J]. Journal of Wind Engineering & Industrial Aerodynamics,2010,98(2):88-99.
[7] BAKER C J. The wind tunnel determination of crosswind forces and moments on a high speed train[C]//TRANSAERO-A European Initiative on Transient Aerodynamics for Railway System Optimisation. Springer Berlin Heidelberg,2002:46-60.
[8] 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 winds[J]. Journal of the China Railway Society,2006,28(6):46-50.
[9] 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.
[10] 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. Study on sind-induced security of high-speed trains on the ground[J]. Journal of Southwest Jiangtong University,2011,46(6):989-995.
[11] 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.
[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] 张亮,张继业,李田,等. 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,et al. Unsteady aerodynamic characteristics and safety of high-speed trains under crosswinds[J]. Journal of Mechanical Engineering. 2016,52(6):124-135.
[14] 李田,张继业,张卫华. 横风下高速列车通过挡风墙动力学性能[J]. 铁道学报,2012,34(7):30-35. LI Tian,ZHANG Jiye,ZHANG Weihua. Dynamic performance of high-speed train passing windbreak in crosswind[J]. Journal of the China Railway Society,2012,34(7):30-35.
[15] 王之宏. 风荷载的模拟研究[J]. 建筑结构学报,1994,15(1):44-52. WANG Zhihong. Simulation of wind loading[J]. Journal of Building Structures,1994,15(1):44-52.
[16] 郗艳红,毛军,李明高,等. 高速列车侧风效应的数值模拟[J]. 北京交通大学学报,2010,34(1):14-19. XI Yangong,MAO Jun,LI Minggao,et al. Numerical Study on the crosswind effects of high-speed train[J]. Journal of Beijing Jiaotong University,2010,34(1):14-19.
