CAJ | 학술논문

高速列车通过隧道时将会在隧道内引起相当复杂的气体压力波动，这是由于列车进入隧道时在隧道入口产生的压力波在隧道内来回传递并与列车经过时的气体压力扰动相互叠加的结果。从车体强度设计和列车运行安全性角度考虑，希望了解隧道内可能的最大气体正、负压力大小及其发生位置；气体压力波动与列车运行速度的关系。通过流体力学方程三维动态数值计算，仿真分析列车高速通过隧道的过程。计算结果证明了入口压力波效应与列车经过的扰动效应的叠加关系，得到列车通过时隧道内最大正压和最大负压发生的可能位置，以及最大正压值与最大负压值与车速间的关系式。可为高速铁路隧道和高速列车设计提供参考。
고속열차통과수도시장회재수도내인기상당복잡적기체압력파동，저시유우열차진입수도시재수도입구산생적압력파재수도내래회전체병여열차경과시적기체압력우동상호첩가적결과。종차체강도설계화열차운행안전성각도고필，희망료해수도내가능적최대기체정、부압력대소급기발생위치；기체압력파동여열차운행속도적관계。통과류체역학방정삼유동태수치계산，방진분석열차고속통과수도적과정。계산결과증명료입구압력파효응여열차경과적우동효응적첩가관계，득도열차통과시수도내최대정압화최대부압발생적가능위치，이급최대정압치여최대부압치여차속간적관계식。가위고속철로수도화고속열차설계제공삼고。
The air pressure wave pattern in a railway tunnel when a high-speed train passes through is quite complicated. This is because the pressure wave in the tunnel is a superposition of the entrance pressure wave, which is produced by the train entering the tunnel and is moved back and forth inside the tunnel, and the pressure perturbation at each particular points of interest produced by the train passing by. From the point of view for strength design of train bodies and security of train operation, the altitudes of the maximum positive air pressure and negative air pressure in tunnel, and the appearance positions of these air pressure peaks should be understood. The dynamic process of high speed trains passing through railway tunnels are simulated and analyzed by means of 3D numerical analysis of computational fluid dynamics equations. Superposition relation of the entrance pressure waves and pressure perturbation produced by the passing train is proved from the calculation results. The possible locations of the maximum positive and negative pressures peaks inside the tunnel are obtained. The predictive formula of the maximum pressure peak values as a function of train speed is derived. This study can potentially be used as a reference for aerodynamically designing of high-speed trains and high-speed railways tunnels.