Supercomputer Based Parallel DGTD Algorithm with LTS Scheme for Electrical Large Problems

In this paper, a nodal discontinuous Galerkin time-domain (NDGTD) algorithm with parallel scheme is proposed to solve transient Maxwell's equations. With the aim to analyze the electromagnetic (EM) features of electrical large problems, the NDGTD is developed on the supercomputer named “Tian-He”, where the message passing interface (MPI) is resorted to facilitate the communication between different threads. In addition, to further improve the time-marching efficiency in dealing with multiscale problems, the local time stepping (LTS) technique is exploited. To benchmark the efficiency and accuracy of the proposed parallel DGTD method, the scattering property of a stealthy aircraft model is investigated.