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A Provably Stable SBP-SAT FDTD Subgridding Method Using Staggered Yee's Grids

  • Yuhui Wang*
  • , Yu Cheng
  • , Langran Deng
  • , Xiang Hua Wang
  • , Xingqi Zhang
  • , Shunchuan Yang*
  • *Corresponding author for this work
  • Beihang University
  • TianJin University of Technology and Education
  • University College Dublin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A provably stable finite-difference time-domain (FDTD) subgridding method is proposed to efficiently solve the transverse magnetic (TM) problems. By using the summationby-parts simultaneous approximation term (SBP-SAT) technique, the staggered Yee's grids without sampling additional components on the interfaces is used, and several projection operators are carefully designed to make sure that SBP properties are satisfied. Therefore, its long-time stability is theoretically guaranteed. Numerical results show that it shows significant accuracy and efficiency improvement compared with the traditional FDTD method.

Original languageEnglish
Title of host publication2022 International Applied Computational Electromagnetics Society Symposium, ACES-China 2022
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665452366
DOIs
StatePublished - 2022
Event2022 International Applied Computational Electromagnetics Society Symposium, ACES-China 2022 - Xuzhou, China
Duration: 9 Dec 202212 Dec 2022

Publication series

Name2022 International Applied Computational Electromagnetics Society Symposium, ACES-China 2022

Conference

Conference2022 International Applied Computational Electromagnetics Society Symposium, ACES-China 2022
Country/TerritoryChina
CityXuzhou
Period9/12/2212/12/22

Keywords

  • Finite-difference time-domain (FDTD)
  • stability
  • subgridding
  • summation-by-parts simultaneous approximation term (SBP-SAT)

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