Model experiment and numeral simulation of the aerodynamics character of high-speed train entering tunnel

When high-speed train entering and exiting from tunnel, a series of aerodynamic effects are created, such as pressure variation in carriage, noises, which are harm to passengers and environment. Model experiment and numeral simulation are efficient methods to research these problems. In this paper, using these two methods, the pressure variation at tunnel measurement points are researched when train entering tunnel. From the results, it can be seen that their results matched well and can validate for each other and the pressure wave creation and transportation principles can be drawn out.