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浙江大学学报(工学版)
浙江大学学报(工学版)
土木工程     
组合模型对受电弓横风气动特性的影响
赵萌, 毛军
北京交通大学 土木建筑工程学院,北京100044
Influence of different composite pantograph models to aerodynamic property under crosswind
ZHAO Meng, MAO Jun
School of Civil Engineering and Architecture, Beijing Jiaotong University, Beijing 100044, China
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摘要：

针对受电弓-接触网和受电弓-接触网-列车2种组合模型,基于三维可压缩流动的纳维-斯托克斯(N-S)动量方程,采用剪切压力传输(SST k-ω)湍流模式和有限体积法,对2种组合模型中的受电弓在不同横风条件下的气动特性进行了数值模拟和对比分析,并讨论横风风速对受电弓气动载荷的影响,采用量纲分析方法,建立受电弓气动力、力矩系数与横风风速、风向角之间的关系表达式.结果表明：与不考虑列车车体的情况相比,车体的存在改变了受电弓绕流场特性,且对受电弓的气动阻力、升力和俯仰力矩的变化规律产生显著影响,对侧向力、倾覆力矩和侧偏力矩的影响相对较小.研究结果可为横风条件下高速列车受电弓的运行安全性及优化设计提供一定的依据.
Abstract:

The three-dimensional compressible Navier-Stokes (N-S) equations, shear-stress transport k-ω  (SST k-ω) turbulence model and finite volume method (FVM) were adopted to simulate the flow filed generated by the model containing pantograph, catenary, carriages and the model containing pantograph and catenary in different crosswind conditions. Aerodynamic differences between these two models were analyzed, and the dynamic load on the pantograph which produced by crosswind was also discussed. Furthermore, dimensional analysis was adopted to establish the relation equations between aerodynamic force coefficients, moment coefficients, crosswind speed and angle. The results show that the flow filed around the pantograph is influenced by the model of carriages. The drag force, lift force and pitching moment are influenced significantly by the model of carriages. However, the lateral force, overturning moment and yawing moment are almost unaffected. The results  provide supports to the safety research and the optimization of the pantograph which operated in the crosswind condition.
出版日期: 2014-12-01
:  U 266  
基金资助:

“十一五”国家科技支撑计划资助项目(2009BAG12A03);国家自然科学基金资助项目(51078901,51308040);研究生创新基金资助项目
通讯作者: 毛军，男，教授     E-mail: jmao@bjtu.edu.cn
作者简介: 赵萌（1986—），女，博士生，从事高速列车空气动力学的研究. E-mail:09115287@bjtu.edu.cn
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引用本文:

赵萌, 毛军. 组合模型对受电弓横风气动特性的影响[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2014.12.020.

ZHAO Meng, MAO Jun. Influence of different composite pantograph models to aerodynamic property under crosswind. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2014.12.020.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2014.12.020    或    http://www.zjujournals.com/eng/CN/Y2014/V48/I12/2246

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