高速铁路风障在横风与列车风耦合作用下的气动特性研究

PDF(3131 KB)

振动与冲击 ›› 2018, Vol. 37 ›› Issue (3) : 153-159.

论文

柳润东1，毛军1，郗艳红1

作者信息 +

Aerodynamic load features of windbreaks of high speed railway under coupled action of cross wind and high speed train wind

LIU Run-dong1, MAO Jun1, XI Yan-hong1

Author information +

文章历史 +

摘要

针对单层、腔室型两种形式的开孔波纹板风障，采用滑移网格方法分别模拟横风条件下高速列车通过风障区域的过程，分析了在横风和列车风耦合作用下风障周围的绕流流场特性、风障面板气动荷载的时域特性及横风与列车风耦合脉动压力的频域特性。结果表明：在高速列车行经风障区域的过程中，无横风时头车产生的冲击作用要大于尾车的；存在横风作用时，列车头车产生的气动冲击作用与横风作用形成对冲，抵消了部分横风能量，而列车尾车则与横风作用相叠加，放大了横风对风障的气动作用；单层风障通过改变横风流向起到挡风减载作用，而腔室型风障同时可在腔室内部及尾流形成大量小漩涡来消耗横风能量，使用腔室风障能显著降低单个风障面板的气动荷载；本文中，横风与列车风耦合作用于风障的脉动压力以及气动荷载的主频谱峰值集中在0.5~5Hz范围内。

Abstract

The sliding mesh method was used to simulate the process of high speed trains passing through a windbreak region under cross wind. The single layer type and chamber type porous and corrugated plate windbreaks were used. The characteristics of flow field around train and windbreaks, time domain characteristics of windbreaks’ aerodynamic load and frequency domain characteristics of fluctuating pressure caused by coupling between cross wind and high speed train wind were analyzed. The results showed that when there is no cross-wind, the train head car’s impacting action is stronger than that of the tripper car be; when there is a cross wind, the head car’s aerodynamic impacting action offsets cross-wind to dissipate its energy, while the tripper car’s aerodynamic impacting action is coupled with cross-wind to amplify cross wind’s aerodynamic impacting action against windbreaks; the single layer windbreak weakens cross-wind’s action through changing its direction, while the chamber windbreak produces a large number of small vortexes inside chamber and wake flow to dissipate cross-wind’s energy and it obviously reduces aerodynamic load of a single windbreak plate.

Key words

cross wind / high speed train / sliding mesh / windbreak / aerodynamic load

引用本文

EndNote

Ris (Procite)

Bibtex

导出引用

柳润东1，毛军1，郗艳红1. 高速铁路风障在横风与列车风耦合作用下的气动特性研究[J]. 振动与冲击, 2018, 37(3): 153-159

LIU Run-dong1, MAO Jun1, XI Yan-hong1. Aerodynamic load features of windbreaks of high speed railway under coupled action of cross wind and high speed train wind[J]. Journal of Vibration and Shock, 2018, 37(3): 153-159

参考文献

[1] Allori D, Bartoli G, Mannini C. Wind tunnel tests on macro-porous structural elements: A scaling procedure[J]. Journal of Wind Engineering & Industrial Aerodynamics, 2013, 123(123):291-299.
[2] Baker C. The flow around high speed trains[J]. Journal of Wind Engineering & Industrial Aerodynamics, 2010, 98(s 6–7):277–298.
[3] Hong S W, Lee I B, Seo I H. Modelling and predicting wind velocity patterns for windbreak fence design[J]. Journal of Wind Engineering & Industrial Aerodynamics, 2015, 142:53-64.
[4] 毛军, 郗艳红, 高亮,等. 腔室耗能型高速铁路风障的减载抗风性能[J]. 机械工程学报, 2014, 50(4):99-106.
MAO Jun, XI Yanhong, GAO Liang, et al. Wind Resistance Performance of the Windbreak with Air Chambers Dissipating Energy Applied in High-speed Railway[J]. Journal of Mechanical Engineering, 2014, 50(4):99-106.
[5] 向活跃, 李永乐, 胡喆,等. 桥上孔隙式风屏障缩尺模型模拟方法的风洞试验[J]. 工程力学, 2013(8):212-216.
XIANG Huoyue, LI Yongle, HU Zhe, et al. Simulation Method of Porous Wind Screen Scale Model on Bridge by Wind Tunnel Tests[J]. Engineering Mechanics,2013(8):212-216
[6] 项超群, 郭文华, 张佳文. 双线高速铁路桥最优风障高度及作用机理的数值研究[J]. 中南大学学报：自然科学版, 2014(8).
XIANG Chaoqun, GUO Wenhua, ZHANG Jiawen. Study on Influence of Wind Barriers on Traffic Safety of Trainsunder Crosswind by Numerical Simulation[J]. Journal of Central South University:Science and Technology.2014(8):2891-2898.
[7] 李波, 杨庆山, 冯少华. 防风栅对高速列车挡风作用的数值模拟[J]. 工程力学, 2015(12):249-256.
LI Bo, YANG Qingshan, FENG Shaohua. Windbreak perfermance of wind fence on high speed train based on numerical simulation[J].Engineering Mechanics,2015(12):249-256.
[8] 王宏朝, 谢金法. 高速铁路声屏障在列车风致脉动力与自然风荷载下的数值模拟[J]. 路基工程, 2013(4):34-38.
WANG Hongchao, XIE Jinfa. Numerical Simulation on Nosie Barrier of High-speed railway under Action of Wind-Induced Fluctuating Pressure of Train and Natural Wind Load[J]. Subgrade Engineering, 2013(4):34-38.
[9] 周宇, 钱炜祺, 邓有奇,等. k-ω两方程湍流模型中参数影响的初步分析[J]. 空气动力学学报, 2010, 28(02):213-217.
ZHOU Yu,QIAN Weiqi DENG Youqi,et al. Introductory analysis of the influence of Menter’s k-ω SST turbulence model’s parameters[J].Acta Aerodynamica Sinica,2010,28(2):213-217.
[10]毛军,郗艳红,杨国伟. 侧风风场特征对高速列车气动性能作用的研究[J]. 铁道学报,2011,04:22-30.
Mao Jun, XI Yanhong,Yang Guowei.Research on influence of characteristics of cross wind field on aerodynamic performance of a high-speed train. [J] Journal of the China Railway Society, 2011, 33(2): 22−33.
[11]龙丽平,赵丽滨,刘立东.列车致声屏障结构的空气脉动力研究[J].工程力学,2010, 27(3):246-250.
LONG Liping,ZHAO Libin,LIU Lidong.Research on the Air Turbulent Force Loaded on Noise Barrier Caused by Train[J].Engineering Mechanics,2010,03:246-250.
[12]王福军. 计算流体动力学分析—CFD软件原理与应用[M]. 北京：清华大学出版社, 2004.