轮对旋转对高速列车气动性能的影响
游守庆，张继业，李田
（西南交通大学 牵引动力国家重点实验室，四川 成都 610031）
摘要：转向架作为高速列车气动阻力的一个重要来源，其周围流场结构较为复杂。基于三维定常可压缩 N－S方程和κ－ε两方程湍流模型，建立了高速列车空气动力学模型，采用有限体积法对时速为350 km/h的高速列车转向架空气动力学性能进行了数值模拟。研究了转向架周边流场结构和转向架阻力分布特性，结果表明：由于轮对的旋转，转向架轮对附近会产生较多的涡流，流场结构变得更复杂；考虑轮对旋转后转向架总阻力会有所增加，且分布规律也会发生一定的变化。
关键词：高速列车；空气动力学；转向架；流场
中图分类号：U260.331+.1 文献标志码：A doi：10.3969/j.issn.1006-0316.2016.08.010
文章编号：1006－0316 (2016) 08－0050－05
The Influence of the Rotation of the Wheelset on the High-Speed Train Aerodynamics
YOU Shouqing，ZHANG Jiye，LI Tian
( Traction Power State Key Laboratory, SouthWest Jiaotong University, Chengdu 610031, China )
Abstract：Bogie is an important source of high-speed train aerodynamic drag.Its surrounding flow field is complicated.Based on the three dimensional steady compressible N－S equation and turbulent model of κ－ε two equation, an aerodynamics model of train was built.The aerodynamics properties of high-speed train running at 350 km/h were numerically simulated by using finite volume method. The flow filed surrounding the bogie and the bogie resistance distribution characteristics were studied.Results show that nearby the wheelset produced a lot of vortex and the flow field structure becomes more complicated due to the rotation of the wheelset; Bogie resistance will be increased and distribution of the resistance will be changed after the rotation of the wheelset was considered.
Key words：high-speed train；aerodynamics；bogie；flow filed
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收稿日期：2016－02－29
作者简介：游守庆（1989－），男，四川内江人，硕士，主要研究方向为列车空气动力学。
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