Incomplete LU preconditioning for the electric-field integral equation
buir.contributor.author | Gürel, Levent | |
dc.contributor.author | Malas, Tahir | en_US |
dc.contributor.author | Gürel, Levent | en_US |
dc.coverage.spatial | Nice, France | en_US |
dc.date.accessioned | 2016-02-08T11:48:15Z | en_US |
dc.date.available | 2016-02-08T11:48:15Z | en_US |
dc.date.issued | 2006 | en_US |
dc.department | Department of Electrical and Electronics Engineering | en_US |
dc.department | Computational Electromagnetics Research Center (BiLCEM) | en_US |
dc.description | Date of Conference: 6-10 November 2006 | en_US |
dc.description | Conference Name: 1st European Conference on Antennas and Propagation, EUCAP 2006 | en_US |
dc.description.abstract | Linear systems resulting from the electric-field integral equation (EFIE) become ill-conditioned, particularly for large-scale problems. Hence, effective preconditioners should be used to obtain the iterative solution with the multilevel fast multipole algorithm in a reasonable time. In this paper, we show that a threshold-based incomplete LU (ILU) preconditioner, i.e., ILUT, can be used safely for such systems, provided that column pivoting is applied for the stability of the incomplete factors. It is observed that the resulting preconditioner ILUTP reduces the solution times by an order of magnitude, compared to simple Jacobi preconditioner. Moreover, we also use the iterative solution of the near-field system as a preconditioner, and use ILUTP as the preconditioner for the near-field system. This way, the effectiveness of the ILUTP is further improved. | en_US |
dc.description.provenance | Made available in DSpace on 2016-02-08T11:48:15Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 70227 bytes, checksum: 26e812c6f5156f83f0e77b261a471b5a (MD5) Previous issue date: 2006 | en |
dc.identifier.issn | 0379-6566 | en_US |
dc.identifier.uri | http://hdl.handle.net/11693/27234 | en_US |
dc.language.iso | English | en_US |
dc.publisher | ||
dc.source.title | Proceedings of the 1st European Conference on Antennas and Propagation, EUCAP 2006 | en_US |
dc.subject | Algorithms | en_US |
dc.subject | Electric field effects | en_US |
dc.subject | Iterative methods | en_US |
dc.subject | Linear systems | en_US |
dc.subject | Electric field integral equations (EFIE) | en_US |
dc.subject | Multipole algorithms | en_US |
dc.subject | Preconditioners | en_US |
dc.subject | Integral equations | en_US |
dc.title | Incomplete LU preconditioning for the electric-field integral equation | en_US |
dc.type | Conference Paper | en_US |
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