Late-time Instability for UPML and Periodic Boundary in Elongated Multilayer Thin Plate Simulations

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dc.contributor.authorLi, Huiping
dc.contributor.authorWang, Yi
dc.contributor.authorCao, Qunsheng
dc.coverage.issue1cs
dc.coverage.volume28cs
dc.date.accessioned2020-04-23T06:56:44Z
dc.date.available2020-04-23T06:56:44Z
dc.date.issued2019-04cs
dc.description.abstractIn this article, we examine the late-time instability properties of hybrid boundary conditions in the discontinuous Galerkin time-domain (DGTD) simulations of an elongated multilayer thin plate. The hybrid boundary is combined by uniaxial perfectly matched layer (UPML) and periodic boundary condition (PBC). Herein, the PBC is employed to approximate an infinite long target. For the target studied, when implementing the UPML within the discrete DGTD domain, late-time instabilities would occur. These instable or spurious information can severely corrupt the solution of a physical problem in time domain. To suppress them, two effective ways are proposed, i.e., increasing the size of the air space (the distance away from the interface between the target studied and the UPML) and decreasing the conductivity of the UPML. The numerical experiments verify that the instability characteristics can be efficiently attenuated by proposed two methods in this paper.en
dc.formattextcs
dc.format.extent108-113cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2019 vol. 28, č. 1, s. 108-113. ISSN 1210-2512cs
dc.identifier.doi10.13164/re.2019.0108en
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/186836
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttps://www.radioeng.cz/fulltexts/2019/19_01_0108_0113.pdfcs
dc.rightsCreative Commons Attribution 4.0 International licenseen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectLate-time instabilityen
dc.subjectDGTDen
dc.subjectelongated multilayer thin plateen
dc.subjecthybrid boundary conditionsen
dc.titleLate-time Instability for UPML and Periodic Boundary in Elongated Multilayer Thin Plate Simulationsen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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