Flow Analysis in the Subway Tunnel with Two Ventilation Shaft and Moving Train Using Immersed Boundary Method

초록

Large Eddy Simulation (LES) has been applied to simulate the flow interface between two vertical ventilation shaft and passing train in the single-bore subway tunnel using moving Immersed Boundary Method[1]. The tunnel and two ventilation shaft were fixed. On the other hand, the modeled train was relatively moved forward in the tunnel. The momentum equations were solved by LES method. The initial condition of fluid in the tunnel was stationary. The Re number is 1,500 based on the train radius. The turbulent flow field in the subway tunnel and two ventilation shaft are to be qualitatively investigated.