【摘要】 以一维可压缩不稳定等熵流理论为基础提出了一种适用范围较为广泛的计算会车期间压力瞬变的方法。建立了模拟会车期间流动的边界条件方程，提出了一种新的跟踪列车运动的网格系统。通过与实测的会车期间压力瞬变曲线对比，验证了本文中提出的方法。并对会车期间的压力瞬变的特征进行了讨论和分析。更多还原

【Abstract】 A widely applicable calculation method for the prediction of pressure transients during the train crossing in a railway tunnel is proposed based on one dimensional unsteady compressible homentropic flow theory. Equations of boundary conditions are built for modeling the flow during the crossing period, and a new grid system for tracking the motion of trains is proposed. The proposed method is verified by comparing it with the practically measured pressure transients. The characteristics of the pressure transients during train crossing are also discussed.更多还原