Influence of tunnel length on the pressure wave generated by high-speed trains passing each other

被引：0
|
作者：
YiWei Wang
GuoWei Yang
ChengGuang Huang
Wei Wang
机构：
[1] Chinese Academy of Sciences,Key Laboratory for Hydrodynamics and Ocean Engineering, Institute of Mechanics
[2] Chinese Academy of Sciences,Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics
[3] Chinese Academy of Sciences,Institute of Mechanics
来源：
Science China Technological Sciences | 2012年 / 55卷
关键词：
passing in tunnel; air pressure wave; tunnel length; numerical simulation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The prediction of the pressure wave amplitude produced when two trains pass each other in the tunnel is important to the train design for airtightness and tunnel conditions in China. In this paper, the key factors of this problem were firstly studied based on theoretical analysis. The equation of the worst tunnel length for the global maximum and minimum pressure values was derived. Then, the influence of tunnel length on global minimum pressure and the critical region in which the global minimum pressure varies rapidly were investigated. Finally, a numerical method based on two-dimensional Navier-Stokes equations was established. Typical conditions of two trains passing-by in tunnels of different lengths were simulated. The theoretical and computational results agree with each other closely.
引用
收藏
页码：255 / 263
页数：8
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