Journal of South China University of Technology(Natural Science) >

2016 , Vol. 44 >Issue 3: 118 - 127

DOI: https://doi.org/10.3969/j.issn.1000-565X.2016.03.017

Traffic & Transportation Engineering

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

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  • 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
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．

Received date: 2014-10-08

  Revised date: 2015-10-21

  Online published: 2016-02-02

Supported by

Supported by the National Natural Science Foundation of China(51278032)

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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

Cite this article

XI Yan-hong MAO Jun LIU Run-dong YANG Guo-wei . A Probe into Air Pressure Pulse Amplitude of High-Speed Trains Crossing in Open Air[J]. Journal of South China University of Technology(Natural Science), 2016 , 44(3) : 118 -127 . DOI: 10.3969/j.issn.1000-565X.2016.03.017

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