TY - GEN
T1 - Towards the Stable FDTD Subgridding Method with SBP-SAT Technique and Arbitrary Grid Ratio
AU - Wang, Yuhui
AU - Deng, Langran
AU - Yang, Shunchuan
N1 - Publisher Copyright:
© 2023 Applied Computational Electromagnetics Society (ACES).
PY - 2023
Y1 - 2023
N2 - A provably stable summation-by-parts simultaneous approximation term (SBP-SAT) finite-difference time-domain (FDTD) subgridding method with arbitrary grid ratios is proposed to solve the transverse magnetic (TM) problems efficiently. The SBP-SAT technique and the carefully designed interpolation matrix with the grid ratio 1:n are used to guarantee long-time stability and accuracy. By introducing a virtual intermediate domain, the interpolation matrix with an arbitrary grid ratio is derived, which is flexible to model complex structures. Numer-ical results show the accuracy, efficiency and flexibility of the proposed subgridding method.
AB - A provably stable summation-by-parts simultaneous approximation term (SBP-SAT) finite-difference time-domain (FDTD) subgridding method with arbitrary grid ratios is proposed to solve the transverse magnetic (TM) problems efficiently. The SBP-SAT technique and the carefully designed interpolation matrix with the grid ratio 1:n are used to guarantee long-time stability and accuracy. By introducing a virtual intermediate domain, the interpolation matrix with an arbitrary grid ratio is derived, which is flexible to model complex structures. Numer-ical results show the accuracy, efficiency and flexibility of the proposed subgridding method.
KW - Finite-difference time-domain (FDTD)
KW - arbitrary grid ratio
KW - stability
KW - sub-gridding
KW - summation-by-parts simultaneous approximation term (SBP-SAT)
UR - https://www.scopus.com/pages/publications/85174262986
U2 - 10.23919/ACES-China60289.2023.10249894
DO - 10.23919/ACES-China60289.2023.10249894
M3 - 会议稿件
AN - SCOPUS:85174262986
T3 - 2023 International Applied Computational Electromagnetics Society Symposium, ACES-China 2023
BT - 2023 International Applied Computational Electromagnetics Society Symposium, ACES-China 2023
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2023 International Applied Computational Electromagnetics Society Symposium, ACES-China 2023
Y2 - 15 August 2023 through 18 August 2023
ER -