TY - GEN
T1 - A discontinuous galerkin time domain-boundary integral method for analyzing transient electromagnetic scattering
AU - Li, Ping
AU - Jiang, Lijun
AU - Shi, Yifei
AU - Bagci, Hakan
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2014/7
Y1 - 2014/7
N2 - 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.
AB - 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.
UR - http://hdl.handle.net/10754/564955
UR - http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=6905273
UR - http://www.scopus.com/inward/record.url?scp=84907875054&partnerID=8YFLogxK
U2 - 10.1109/APS.2014.6905273
DO - 10.1109/APS.2014.6905273
M3 - Conference contribution
SN - 9781479935406
SP - 1893
EP - 1894
BT - 2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)
PB - Institute of Electrical and Electronics Engineers (IEEE)
ER -