Novel electromagnetic surface integral equations for highly accurate computations of dielectric bodies with arbitrarily low contrasts

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buir.contributor.authorGürel, Levent
dc.citation.epage9912en_US
dc.citation.issueNumber23en_US
dc.citation.spage9898en_US
dc.citation.volumeNumber227en_US
dc.contributor.authorErgül O.en_US
dc.contributor.authorGürel, Leventen_US
dc.date.accessioned2016-02-08T10:06:51Z
dc.date.available2016-02-08T10:06:51Z
dc.date.issued2008en_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.description.abstractWe present a novel stabilization procedure for accurate surface formulations of electromagnetic scattering problems involving three-dimensional dielectric objects with arbitrarily low contrasts. Conventional surface integral equations provide inaccurate results for the scattered fields when the contrast of the object is low, i.e., when the electromagnetic material parameters of the scatterer and the host medium are close to each other. We propose a stabilization procedure involving the extraction of nonradiating currents and rearrangement of the right-hand side of the equations using fictitious incident fields. Then, only the radiating currents are solved to calculate the scattered fields accurately. This technique can easily be applied to the existing implementations of conventional formulations, it requires negligible extra computational cost, and it is also appropriate for the solution of large problems with the multilevel fast multipole algorithm. We show that the stabilization leads to robust formulations that are valid even for the solutions of extremely low-contrast objects. © 2008 Elsevier Inc. All rights reserved.en_US
dc.description.provenanceMade available in DSpace on 2016-02-08T10:06:51Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 70227 bytes, checksum: 26e812c6f5156f83f0e77b261a471b5a (MD5) Previous issue date: 2008en
dc.identifier.doi10.1016/j.jcp.2008.08.004en_US
dc.identifier.eissn1090-2716
dc.identifier.issn0021-9991
dc.identifier.urihttp://hdl.handle.net/11693/22944
dc.language.isoEnglishen_US
dc.publisherJournal of Computational Physicsen_US
dc.relation.isversionofhttps://doi.org/10.1016/j.jcp.2008.08.004en_US
dc.source.titleJournal of Computational Physicsen_US
dc.subjectDielectricsen_US
dc.subjectLow contrasten_US
dc.subjectMultilevel fast multipole algorithmen_US
dc.subjectSurface integral equationsen_US
dc.titleNovel electromagnetic surface integral equations for highly accurate computations of dielectric bodies with arbitrarily low contrastsen_US
dc.typeArticleen_US

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