Prediction of the Entry Compression Waves Formed by a High-Speed Train Entering Tunnel

초록

In this current study, numerical simulations are carried out to explain the detailed formation of entry compression waves. Commercial software ANSYS FLUENT 17.1 is used to carry out the simulations. Unsteady, compressible NavierStokes’ and Euler equations were solved. The numerical scheme is validated for a particular experimental study conducted on a reduced scale model. A good agreement with the experimental data forms the basis for the numerical scheme used for further computational analysis of this study. The velocity of the train is varied to observe different formation processes of compression waves and the flow physics is comprehended using pressure histograms and contour plots.