Aerodynamic Interface in Double-Bore Railway Tunnel with Three Vertical Ventilations

초록

Aerodynamic interface phenomena between two passing-by trains and three vertical ventilations in the double-bore railway tunnel are analyzed by Moving IBM(Immersed Boundary Method). The flow fields around trains and inside tunnel & ventilations are investigat-ed. The trains are modeled by cylinder type body and relatively moved each other. On the other hand, the tunnel and vertical ventila-tions are fixed. The momentum equations are solved by large eddy simulation (LES). The initial condition of fluid in the railway tunnel is stationary. The Reynolds number is 1,500 based on the train body radius. The turbulent flow fields in the railway tunnel and vertical ventilations are qualitatively investigated.