TY - GEN
T1 - Two-level preconditioning techniques for electromagnetic wave scattering problems
AU - Lee, Jeonghwa
AU - Zhang, Jun
AU - Lu, Cai Cheng
PY - 2005
Y1 - 2005
N2 - 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.
AB - 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.
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U2 - 10.1109/WCACEM.2005.1469692
DO - 10.1109/WCACEM.2005.1469692
M3 - Conference contribution
AN - SCOPUS:33744969819
SN - 0780390687
SN - 9780780390683
T3 - 2005 IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics
SP - 740
EP - 743
BT - 2005 IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics
T2 - 2005 IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics
Y2 - 3 April 2005 through 7 April 2005
ER -