An Efficient Transient em Solver with Dynamic P- Adaptation and Multirate Time Integration

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

Abstract

In the discontinuous Galerkin time-domain (DGTD) simulation of a transient electromagnetic (EM) problem, the polynomial orders in the solution domain can be adjusted locally and dynamically in real time of the simulation to achieve a similar spatial resolution with a reduced computational cost compared to the simulation with uniformly high-order polynomials. The resulting dynamic p-adaptation technique has been shown to be very flexible and efficient. However, the time step size of an explicit time integration method is limited by the element with the smallest size and the highest polynomial order, which can be unnecessarily small for the elements with larger sizes or lower polynomial orders. To alleviate the global constraint on the time step size, a multi rate time integration technique, which permits different time step sizes in different elements, is adopted in this work to enhance the efficiency of the p-adaptive DG TD method. An EM scattering problem is given as an example to demonstrate the flexibility and efficiency of the proposed method.

Original languageEnglish (US)
Title of host publication2018 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting, APSURSI 2018 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1321-1322
Number of pages2
ISBN (Electronic)9781538671023
DOIs
StatePublished - Jan 1 2018
Event2018 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting, APSURSI 2018 - Boston, United States
Duration: Jul 8 2018Jul 13 2018

Publication series

Name2018 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting, APSURSI 2018 - Proceedings

Conference

Conference2018 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting, APSURSI 2018
CountryUnited States
CityBoston
Period7/8/187/13/18

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ASJC Scopus subject areas

  • Computer Networks and Communications
  • Instrumentation
  • Radiation

Cite this

Yan, S., & Jin, J. M. (2018). An Efficient Transient em Solver with Dynamic P- Adaptation and Multirate Time Integration. In 2018 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting, APSURSI 2018 - Proceedings (pp. 1321-1322). [8608287] (2018 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting, APSURSI 2018 - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APUSNCURSINRSM.2018.8608287