A discontinuous galerkin time domain-boundary integral method for analyzing transient electromagnetic scattering

Ping Li, Lijun Jiang, Yifei Shi, Hakan Bagci

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

This paper presents an algorithm hybridizing discontinuous Galerkin time domain (DGTD) method and time domain boundary integral (BI) algorithm for 3-D open region electromagnetic scattering analysis. The computational domain of DGTD is rigorously truncated by analytically evaluating the incoming numerical flux from the outside of the truncation boundary through BI method based on the Huygens' principle. The advantages of the proposed method are that it allows the truncation boundary to be conformal to arbitrary (convex/ concave) scattering objects, well-separated scatters can be truncated by their local meshes without losing the physics (such as coupling/multiple scattering) of the problem, thus reducing the total mesh elements. Furthermore, low frequency waves can be efficiently absorbed, and the field outside the truncation domain can be conveniently calculated using the same BI formulation. Numerical examples are benchmarked to demonstrate the accuracy and versatility of the proposed method.
Original languageEnglish (US)
Title of host publication2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1893-1894
Number of pages2
ISBN (Print)9781479935406
DOIs
StatePublished - Jul 2014

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