Electromagnetic Pulse Propagation over Large Area Simulation through Massively Parallel Adaptive Mesh Refinement FDTD

FDTD method is an effective approach for electromagnetic pulse (EMP) problems simulation. However, simulating EMP propagating over large area with conventional FDTD is not applicable, even with the state-of-art super-computers due to the numerous computations required. In this paper, an FDTD method with multi-level parallel computation techniques and adaptive mesh refinement (AMR) strategy is proposed to solve EMP propagation over a large area. Numerical example shows the computation time decrease down to 20% while preserving excellent precision. The parallel AMR FDTD method is capable of simulating EMP propagation in city as shown in the example.