高速列车瞬变压力的传递规律

Transfer law of transient pressure of high-speed train

车外压力瞬变传入车厢时将会严重影响旅客乘坐舒适度,国际上将这一问题归结为车辆气密性问题。随着列车速度的提高,研究高速列车气密性问题与车内外压力传递规律具有重要意义。文章通过将这一复杂物理现象建立数学模型,并在建立的数学模型的基础之上,利用FORTRAN77编写程序,然后,通过车外压力求出车内压力,将车内压力变化的规律绘出曲线,并指出影响车辆气密性的主要因素。

Passengers＇ riding comfort will be seriously effected when the outside pressure changes instantly and transfers into carriages. Internationally, this issue is boiled down to tightness problem of vehicles.With the increase of train speed, it is of great importance to study the tightness and the transfer rule of pressure in and out of the carriages.Based on the phenomenon, a mathematical mode is es- tablished in this paper, and then, program is writed by FORTRAN77 and pressure changing curve is drew.At last, main factor affecting the tightness of carriages is also put forward.