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A Stable Hybrid Implicit-Explicit FDTD Subgridding Method for TE Analysis

  • Langran Deng*
  • , Yuhui Wang
  • , Xianghua Wang
  • , Xingqi Zhang
  • , Shunchuan Yang*
  • *Corresponding author for this work

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

Abstract

A stable FDTD subgridding method combining the finite-difference time-domain (FDTD) method and the leapfrog alternately-direction-implicit finite-difference time-domain (ADI-FDTD) method is proposed to accurately and efficiently solve two-dimensional transverse electric (TE) problems. The FDTD method is used in the coarse meshes and the leapfrog ADI-FDTD method in local subgrid meshes, respectively. Spatial interpolation between interfaces of coarse and subgrid meshes are carefully designed. To avoid interpolation in temporal domain and improve the efficiency, one uniform large time step is used in the whole computational domain. Results show that its stability can be guaranteed, and the accuracy and efficiency are improved.

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

  • FDTD
  • hybrid methods
  • leapfrog ADI-FDTD
  • stable
  • subgridding

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