A meshless numerical identification of a sound-hard obstacle
dc.contributor.author | Karageorghis, Andreas | en |
dc.contributor.author | Lesnic, D. | en |
dc.creator | Karageorghis, Andreas | en |
dc.creator | Lesnic, D. | en |
dc.date.accessioned | 2019-12-02T10:36:03Z | |
dc.date.available | 2019-12-02T10:36:03Z | |
dc.date.issued | 2012 | |
dc.identifier.uri | http://gnosis.library.ucy.ac.cy/handle/7/57050 | |
dc.description.abstract | We propose a simple meshless method for detecting a rigid (sound-hard) scatterer embedded in a host acoustic homogeneous medium from scant measurements of the scattered near field. This inverse problem is ill-posed since a solution may not be unique and furthermore, small errors in the input data cause large errors in the output solution. We develop a nonlinear minimization regularized method of fundamental solutions (MFS) for obtaining the numerical solution of the inverse problem in question. Although the MFS is restricted to homogeneous media with constant wavenumber, it is easy to use and simple to implement in higher dimensions. The proposed scheme is tested on several numerical examples and its stability is investigated by inverting measurements contaminated by random noise. © 2012 Elsevier Ltd. All rights reserved. | en |
dc.source | Engineering Analysis with Boundary Elements | en |
dc.source.uri | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84857400039&doi=10.1016%2fj.enganabound.2012.02.001&partnerID=40&md5=44f0a5cfbd01adea7e2e9e904d1f34db | |
dc.subject | Errors | en |
dc.subject | Numerical methods | en |
dc.subject | Higher dimensions | en |
dc.subject | Inverse problems | en |
dc.subject | Numerical solution | en |
dc.subject | Numerical example | en |
dc.subject | Wave numbers | en |
dc.subject | Inverse problem | en |
dc.subject | Method of fundamental solutions | en |
dc.subject | Acoustic scattering | en |
dc.subject | Homogeneous medium | en |
dc.subject | Mesh-less methods | en |
dc.subject | Homogeneous media | en |
dc.subject | Ill posed | en |
dc.subject | Input datas | en |
dc.subject | Meshless | en |
dc.subject | Near fields | en |
dc.subject | Nonlinear minimization | en |
dc.subject | Random noise | en |
dc.subject | Regularized method | en |
dc.title | A meshless numerical identification of a sound-hard obstacle | en |
dc.type | info:eu-repo/semantics/article | |
dc.identifier.doi | 10.1016/j.enganabound.2012.02.001 | |
dc.description.volume | 36 | |
dc.description.issue | 7 | |
dc.description.startingpage | 1074 | |
dc.description.endingpage | 1081 | |
dc.author.faculty | Σχολή Θετικών και Εφαρμοσμένων Επιστημών / Faculty of Pure and Applied Sciences | |
dc.author.department | Τμήμα Μαθηματικών και Στατιστικής / Department of Mathematics and Statistics | |
dc.type.uhtype | Article | en |
dc.description.notes | <p>Cited By :4</p> | en |
dc.source.abbreviation | Eng Anal Boundary Elem | en |
dc.contributor.orcid | Karageorghis, Andreas [0000-0002-8399-6880] | |
dc.gnosis.orcid | 0000-0002-8399-6880 |
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