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dc.contributor.authorDuan, Wenbo
dc.date.accessioned2022-08-24T09:30:04Z
dc.date.available2022-08-24T09:30:04Z
dc.date.issued2022-11-01
dc.identifier.citationDuan , W 2022 , ' Time domain numerical modelling of guided wave excitation in fluid-filled pipes ' , Finite Elements in Analysis and Design , vol. 210 , 103813 . https://doi.org/10.1016/j.finel.2022.103813
dc.identifier.issn0168-874X
dc.identifier.otherPURE: 31498699
dc.identifier.otherPURE UUID: 076f5daa-5840-49ee-a33f-0fdb1c27dfad
dc.identifier.otherScopus: 85135725917
dc.identifier.otherORCID: /0000-0002-1153-2075/work/117949663
dc.identifier.urihttp://hdl.handle.net/2299/25733
dc.description© 2022 The Author. Published by Elsevier B.V. This is an open access article under the CC BY licence. https://creativecommons.org/licenses/by/4.0/
dc.description.abstractAcoustic waves have been widely used to inspect pipeline defects, including leakage, blockage and corrosion etc. The time-domain excitation of guided waves in the fluid/solid coupled pipeline system has rarely been studied theoretically. This requires the incorporation of a source term in the coupled system. This article introduces a finite element based numerical model to study the excitation of guided waves in the coupled system with a sound source either in the fluid or on the pipe wall. A compatible pair of time-domain Perfectly Matched Layers (PMLs) have been proposed to absorb pipe end reflections in the elastic wall and in the fluid respectively. These fluid/solid PML numerical formulations are coupled and the implementation of the coupling is introduced. The numerical model is validated against an enlarged model without PML, and excellent agreement has been achieved. The numerical model shows that the dominant excited wave mode is a fluid type wave mode when the sound source is a fluid source or a radial elastic line source. However, the dominant excited wave mode is a structure type wave mode when the sound source is an axial elastic line source.en
dc.format.extent17
dc.language.isoeng
dc.relation.ispartofFinite Elements in Analysis and Design
dc.subjectExcitation of guided waves
dc.subjectFluid/solid coupling
dc.subjectTime domain PMLs
dc.subjectAnalysis
dc.subjectEngineering(all)
dc.subjectComputer Graphics and Computer-Aided Design
dc.subjectApplied Mathematics
dc.titleTime domain numerical modelling of guided wave excitation in fluid-filled pipesen
dc.contributor.institutionSchool of Physics, Engineering & Computer Science
dc.contributor.institutionDepartment of Pharmacy, Pharmacology and Postgraduate Medicine
dc.description.statusPeer reviewed
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85135725917&partnerID=8YFLogxK
rioxxterms.versionVoR
rioxxterms.versionofrecordhttps://doi.org/10.1016/j.finel.2022.103813
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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