华南理工大学学报(自然科学版) ›› 2016, Vol. 44 ›› Issue (3): 118-127.doi: 10.3969/j.issn.1000-565X.2016.03.017

• 交通与运输工程 • 上一篇    下一篇

高速列车明线会车压力波波幅研究

郗艳红1,2 毛军1,2 柳润东1 杨国伟3   

  1. 1. 北京交通大学 土木建筑工程学院,北京 100044;2. 北京交通大学 轨道工程北京市重点实验室,北京 100044; 3. 中国科学院 力学研究所,北京 100190
  • 收稿日期:2014-10-08 修回日期:2015-10-21 出版日期:2016-03-25 发布日期:2016-02-02
  • 通信作者: 郗艳红(1980-),女,博士后,讲师. 主要从事高速列车空气动力学与行车安全、火灾安全等研究. E-mail:yhxi@bjtu.edu.cn
  • 作者简介:郗艳红(1980-),女,博士后,讲师. 主要从事高速列车空气动力学与行车安全、火灾安全等研究.
  • 基金资助:
    国家自然科学基金资助项目(51278032)

A Probe into Air Pressure Pulse Amplitude of High-Speed Trains Crossing in Open Air

XI Yan-hong1,2 MAO Jun1,2 LIU Run-dong1 YANG Guo-wei3   

  1. 1.School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China; 2.Beijing Key Laboratory of Track Engineering,Beijing Jiaotong University,Beijing 100044,China; 3.Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China
  • Received:2014-10-08 Revised:2015-10-21 Online:2016-03-25 Published:2016-02-02
  • Contact: 郗艳红(1980-),女,博士后,讲师. 主要从事高速列车空气动力学与行车安全、火灾安全等研究. E-mail:yhxi@bjtu.edu.cn
  • About author:郗艳红(1980-),女,博士后,讲师. 主要从事高速列车空气动力学与行车安全、火灾安全等研究.
  • Supported by:
    Supported by the National Natural Science Foundation of China(51278032)

摘要: 采用移动网格原理对列车明线交会的空气动力学特性进行了数值模拟. 修正了Steinheur 经验公式,并给出了等速交会的列车表面压力波波幅的新计算公式. 研究表明:交会列车低速时对应的压力波幅值小于高速时的幅值;波幅与交会速度、交会侧间距和监测点的高度有关,并近似与列车运行速度的平方成正比;交会侧间距越小,波幅越大;在其他条件不变的情况下,交会侧间距比高度对压力波幅的影响大.

关键词: 高速列车, 交会压力波, 压力波幅值, 数值模拟, 边界层

Abstract: The aerodynamic characteristics of high-speed trains passing by in open air are numerically analyzed on the basis of moving mesh.Then,the Steinheur empirical formula for calculating air pressure pulse amplitude is mo- dified,and a new formula is presented.The results show that (1) the pressure pulse amplitude of low-speed trains passing by in open air is less than that of high-speed trains; (2) the amplitude is related to crossing speed,track- ing distance as well as monitoring point height,and is basically proportional to the traveling speed square of trains; (3) smaller tracking distance results in higher amplitude; and (4) tracking distance has a greater effect on the am- plitude in comparison with monitoring point height when other conditions keep constant.

Key words: high-speed train, crossing pressure wave, air pressure pulse amplitude, numerical simulation, boundary layer

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