长隧道中高速列车阻力的分析

Because the flowing air is restricted by the tunnel wall as and the air condensability nature, when the train enters the tunnel and through the tunnel can bring the quite tremendous instantaneous pressure, which effect can cause the train to increase the movement resistance. The paper studies a comprehensive quasi-steady statistical algorithm, makes the comparison according to and the method of characteristics computed result and the prototype train resistance survey data, proved this method uses in the situation of unsteady flowing is reasonable. The paper introduces the inferential reasoning reliable empirical coefficient method, and has carried on the most important parameter to the air drag influence research.