高速列车车内压力波动值计算方法初探

高速列车在隧道内运行时，车外的压力变动会引起列车车内压力的变动，从而带来乘客感觉舒适性问题。为解决这一问题需要采取压力保护等措施，而计算列车车内压力波动是必不可少的基础性工作。利用流入流出单节密封车厢的流量关系，以连续换气方式和截止阀方式为例，模拟了列车在安装这两种装置时隧道单车压力波与会车压力波条件下的车内压力波动规律，验证了计算方法在计算车内压力方面的有效性。

Calculating Method of Pressure Change inside High Speed Train

Pressure change outside of a train brings the inside pressure change, when it is through a tunnel at the high speed. This causes passengers to suffer aural discomfort. In order to avoid the phenomenon, it is absolutely to ratmerical inside pressure change of the train. This paper provides a com- pater program which is used to account the pressure change inside of the train which is isolated each other based on the flow rate coming in and out of sealed car, and simulates the inside pressure changes of trains with the ventilating equipment and choke valve equipment. It is proved that this program is effective in reducing the pressure inside of train.