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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。
Based on the theory of one-dimensional compressible unstable isentropic flow, a method of calculating pressure transients during the meeting is proposed. A boundary condition equation was established to simulate the flow during the meeting and a new grid system to track the movement of the train was proposed. The method proposed in this paper is validated by comparing with the measured pressure transient curve during the meeting. The characteristics of pressure transients during the meeting were also discussed and analyzed.