TY - GEN
T1 - A DGTD algorithm with dynamic h-adaptation and local time-stepping for solving Maxwell's equations
AU - Lin, Chao Ping
AU - Yan, Su
AU - Arslanbekov, Robert R.
AU - Kolobov, Vladimir
AU - Jin, Jian Ming
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/10/25
Y1 - 2016/10/25
N2 - In the simulation of electromagnetic (EM) scattering under the excitation of an EM pulse, high spatial resolution is needed in the regions with fast field oscillations, which propagate in space and time. The use of a uniformly dense mesh in the entire solution domain would increase the number of degrees of freedom and the resulting simulation time significantly. To efficiently capture the variation of EM fields, a discontinuous Galerkin time-domain algorithm with dynamic h-adaptation is presented, which changes the resolution of each mesh element in real time based on the gradient of EM fields. Also, it is combined with a local time-stepping scheme to alleviate the restriction on time step size due to the stability condition. It is shown by a numerical example that with the method presented in this paper, the computational time can be reduced effectively.
AB - In the simulation of electromagnetic (EM) scattering under the excitation of an EM pulse, high spatial resolution is needed in the regions with fast field oscillations, which propagate in space and time. The use of a uniformly dense mesh in the entire solution domain would increase the number of degrees of freedom and the resulting simulation time significantly. To efficiently capture the variation of EM fields, a discontinuous Galerkin time-domain algorithm with dynamic h-adaptation is presented, which changes the resolution of each mesh element in real time based on the gradient of EM fields. Also, it is combined with a local time-stepping scheme to alleviate the restriction on time step size due to the stability condition. It is shown by a numerical example that with the method presented in this paper, the computational time can be reduced effectively.
UR - http://www.scopus.com/inward/record.url?scp=84997254316&partnerID=8YFLogxK
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U2 - 10.1109/APS.2016.7696746
DO - 10.1109/APS.2016.7696746
M3 - Conference contribution
AN - SCOPUS:84997254316
T3 - 2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016 - Proceedings
SP - 2079
EP - 2080
BT - 2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016
Y2 - 26 June 2016 through 1 July 2016
ER -