Two-level preconditioning techniques for electromagnetic wave scattering problems

Jeonghwa Lee, Jun Zhang, Cai Cheng Lu

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

Abstract

We investigate preconditioned iterative solutions of large dense complex valued matrices arising from discretizing the hybrid integral equations of electromagnetic scattering. Due to the specific data pattern, we propose to construct two-level (TL) preconditioners to treat the conducting and dielectric parts more efficiently. The main purpose of this study is to show that the TL preconditioning is effective with the MLFMA and can reduce the number of Krylov iterations substantially by using subdivided domain of the near part matrix for each level. Our experimental results indicate that the TL preconditioning maintains the computational complexity of the MLFMA, but converges much faster, thus effectively reduces the overall simulation time for the coated material objects.

Original languageEnglish
Title of host publication2005 IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics
Pages740-743
Number of pages4
DOIs
StatePublished - 2005
Event2005 IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics - Honolulu, HI, United States
Duration: Apr 3 2005Apr 7 2005

Publication series

Name2005 IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics
Volume2005

Conference

Conference2005 IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics
Country/TerritoryUnited States
CityHonolulu, HI
Period4/3/054/7/05

ASJC Scopus subject areas

  • Engineering (all)

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