NUMERICAL STUDY ON THE COMPRESSION WAVE GENERATED BY THE TRAIN ENTERING A TUNNEL

열차가 터널에 진입할 때 발생하는 압축파에 대한 수치해석 - 열차의 출발방법 및 터널과의 거리에 대한 영향

The numerical simulations on the train entrering a tunnel were performed by solving unsteady axi-symmetric problems. To reduce the effects of the pressure wave generated by the train starting abruptly, several starting method of the train were also examined. The pressure rise by the train entering a tunnel was compared with other results, and similar value was obtained compared with those of previous studies.