In order to make the tunnel hoods have a better effect on the respect of alleviating the aerodynamics in tunnels , the theory of the generating and propagation of the compression wave in tunnels should be research and the effects of all kinds of tunnel hoods on the compression wave should be analyzed 为了使隧道缓冲结构在减小隧道空气动力效应方面起到更好的作用，须深入研究有关隧道压缩波的形成及传播机理，比较分析不同形式缓冲结构对其影响等一系列问题。
This field is the key to understand the compression waves and the booming noise , the foundation of the tunnel aerodynamic research , and an important factor to other relating aerodynamic problems . the transient flow field induced by tunnel entry is investigated and clarified with the focus on visualization of the pressure field and the velocity field 这个流场的研究是解决其它隧道空气动力学问题的基础和前提，它们的研究方法和研究成果，直接关系到高速列车在隧道中运行的空气阻力的确定、列车头部形状的研究、长大隧道的通风问题以及出口微压波问题的研究。
This paper conclude the history and present situation of the research of the compression wave home and abroad ; summarize the forms dimensions of the railway tunnels and tunnel hoods abroad ; discuss the physics model and mathematics model of the air flow when high - speed train running in a tunnel and introduce the compulation method of the pressure in tunnels briefly 本论文首先总结了隧道压缩波研究的历史和现状：针对高速列车所引起的空气动力效应要求，统计了国外高速铁路隧道及各种缓冲结构的形式和尺寸。讨论了高速列车在隧道内运行中引起的空气流动物理模型和数学模型，并简单介绍了隧道内空气压力的计算方法。
In this paper , using high - speed train aerodynamics model research system , the propagation mechanism of compression wave , which created when high - speed train entering into a tunnel was researched , at the same time the effect of velocity of the model train and the ratio of train with tunnel was analyzed , the result is helpful for future research 利用高速列车空气动力学模型实验系统对高速列车在进入隧道过程中瞬变压力的传播规律进行研究，并分析了列车速度以及阻塞比对测试结果的影响，得出的结论对以后的研究具有一定的参考和借鉴。
