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

In this paper, we present a nodal discontinuous Galerkin time-domain (NDGTD) algorithm with a parallel scheme for solving transient Maxwell's equations. With the objective of analyzing the electromagnetic characteristics of electrical-large problems, the NDGTD algorithm is implemented on the supercomputer named “Tian- He” utilizing the message passing interface (MPI) for inter-thread communication. Additionally, to enhance time-marching efficiency in dealing with multi-scale problems, the local time stepping (L TS) technique is implemented based on the leapfrog integration scheme. To assess the efficiency and accuracy of the proposed parallel NDGTD algorithm, an investigation into the scattering properties of a stealthy aircraft model and the far-field characteristics of a patch antenna array is conducted.