REFLECTIONLESS DISCRETE PERFECTLY MATCHED LAYERS FOR HIGHER-ORDER FINITE DIFFERENCE SCHEMES

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dc.contributor.authorHojas, Vicente A.
dc.contributor.authorPerez-Arancib, Carlos
dc.contributor.authorSanchez, Manuel A.
dc.date.accessioned2025-01-20T16:04:24Z
dc.date.available2025-01-20T16:04:24Z
dc.date.issued2024
dc.description.abstractThis paper introduces discrete holomorphic perfectly matched layers (PMLs) specifically designed for high-order finite difference (FD) discretizations of the scalar wave equation. In contrast to standard PDE-based PMLs, the proposed method achieves the remarkable outcome of completely eliminating numerical reflections at the PML interface, in practice achieving errors at the level of machine precision. Our approach builds upon the ideas put forth in a recent publication [A. Chern, J. Comput. Phys., 381 (2019), pp. 91--109] expanding the scope from the standard second- order FD method to arbitrarily high-order schemes. This generalization uses additional localized PML variables to accommodate the larger stencils employed. We establish that the numerical solutions generated by our proposed schemes exhibit a geometric decay rate as they propagate within the PML domain. To showcase the effectiveness of our method, we present a variety of numerical examples, including waveguide problems. These examples highlight the importance of employing high-order schemes to effectively address and minimize undesired numerical dispersion errors, emphasizing the practical advantages and applicability of our approach.
dc.fuente.origenWOS
dc.identifier.doi10.1137/23M1581558
dc.identifier.eissn1095-7197
dc.identifier.issn1064-8275
dc.identifier.urihttps://doi.org/10.1137/23M1581558
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/89741
dc.identifier.wosidWOS:001353502300013
dc.issue.numero5
dc.language.isoen
dc.pagina.finalA3123
dc.pagina.inicioA3094
dc.revistaSiam journal on scientific computing
dc.rightsacceso restringido
dc.subjectwave equation
dc.subjectHelmholtz equations
dc.subjectperfectly matched layer
dc.subjectfinite difference method
dc.subjectabsorbing boundary condition
dc.subjectnon-reflecting boundary condition
dc.titleREFLECTIONLESS DISCRETE PERFECTLY MATCHED LAYERS FOR HIGHER-ORDER FINITE DIFFERENCE SCHEMES
dc.typeartículo
dc.volumen46
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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