隧道内高速列车会车压力波的数值模拟方法

The Numerical Prediction Method of the High Speed Train Crossing Pressure Waves in a Single Bore Tunnel

首次根据一维、可压缩、不等熵非定常流体流动理论以及广义黎曼变量特征线法发展了高速列车在隧道内会车所引起的隧道内空气压力瞬变的数值方法．验证计算表明：本文所提出的隧道内会车压力波计算方法是合理可行的．可为今后进一步研究高速列车隧道内会车压力波提供基础．

A one-dimensional unsteady compressible non-homentropic flow prediction method for calculating train crossing pressure waves generated by high speed trains passing through a single bore tunnel is presented.This numerical procedure is based on the method of characteristics expressed with generalized Riemann Variables.The calculated results show that the numerical prediction method and calculated results in this paper are reasonable.The method can be used to investigate train crossing pressure waves in a single bore tunnel further.