The Method for Analyses of Electromagnetic Pulse Propagation in Tunnels

In this paper, we propose a solution model based on Finite Difference Time Domain (FDTD) method to analyze the electromagnetic pulse propagation in tunnels. In this method, Conventional Perfectly Matched Layers (CPML) is occupied to truncate the computational domain, and conformal grids are used to model camber top of the tunnel. Ultra-wideband pulse is used as the source used to and parallel implementation is occupied to overcome the computer memory limit. The electromagnetic pulse propagation in tunnels is simulated and some propagation laws are found which demonstrate the efficiency of the proposed method.