When a train travels through a tunnel at high speed, large pressure variations are generated in the tunnel. It is thus essential to accurately predict these pressure variations when planning to increase the speed of Shinkansen or Maglev trains. We have developed a one-dimensional flow simulation program to calculate the pressure variations and the wind velocity in a high-speed railway tunnel. This program can perform predictions for tunnels with shafts and/or stations/terminals for train speeds up to about 500 km/h. The simulation results agree well with the results of model experiments.
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机译：当火车高速通过隧道时，隧道中会产生较大的压力变化。因此，在计划增加新干线或磁悬浮列车的速度时，准确预测这些压力变化至关重要。我们开发了一个一维流动模拟程序来计算高速铁路隧道中的压力变化和风速。该程序可以对带竖井和/或车站/终点站的隧道进行预测，列车速度最高可达约500 km / h。仿真结果与模型实验结果吻合良好。
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