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dc.contributor.authorKurniawan, A
dc.contributor.authorTran, TT
dc.contributor.authorBrown, Scott Andrew
dc.contributor.authorEskilsson, C
dc.contributor.authorOrszaghova, J
dc.contributor.authorGreaves, Deborah
dc.date.accessioned2021-07-08T18:50:39Z
dc.date.available2021-07-08T18:50:39Z
dc.date.issued2021-06-07
dc.identifier.issn1752-1416
dc.identifier.issn1752-1424
dc.identifier.otherrpg2.12229
dc.identifier.urihttp://hdl.handle.net/10026.1/17313
dc.description.abstract

Parametric resonance is a non-linear phenomenon in which a system can oscillate at a frequency different from its exciting frequency. Some wave energy converters are prone to this phenomenon, which is usually detrimental to their performance. Here, a computationally efficient way of simulating parametric resonance in point absorbers is presented. The model is based on linear potential theory, so the wave forces are evaluated at the mean position of the body. However, the first-order variation of the body's centres of gravity and buoyancy is taken into account. This gives essentially the same result as a more rigorous approach of keeping terms in the equation of motion up to second order in the body motions. The only difference from a linear model is the presence of non-zero off-diagonal elements in the mass matrix. The model is benchmarked against state-of-the-art non-linear Froude–Krylov and computational fluid dynamics models for free decay, regular wave, and focused wave group cases. It is shown that the simplified model is able to simulate parametric resonance in pitch to a reasonable accuracy even though no non-linear wave forces are included. The simulation speed on a standard computer is up to two orders of magnitude faster than real time.

dc.format.extent3186-3205
dc.languageen
dc.language.isoen
dc.publisherInstitution of Engineering and Technology (IET)
dc.titleNumerical simulation of parametric resonance in point absorbers using a simplified model
dc.typejournal-article
dc.typeJournal Article
plymouth.author-urlhttps://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000660487100001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=11bb513d99f797142bcfeffcc58ea008
plymouth.issue14
plymouth.volume15
plymouth.publication-statusPublished
plymouth.journalIET Renewable Power Generation
dc.identifier.doi10.1049/rpg2.12229
plymouth.organisational-group/Plymouth
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering/School of Engineering, Computing and Mathematics
plymouth.organisational-group/Plymouth/PRIMaRE Publications
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA/UoA12 Engineering
plymouth.organisational-group/Plymouth/Research Groups
plymouth.organisational-group/Plymouth/Research Groups/Marine Institute
plymouth.organisational-group/Plymouth/Users by role
plymouth.organisational-group/Plymouth/Users by role/Academics
plymouth.organisational-group/Plymouth/Users by role/Researchers in ResearchFish submission
dcterms.dateAccepted2021-05-17
dc.rights.embargodate2021-7-10
dc.identifier.eissn1752-1424
dc.rights.embargoperiodNot known
rioxxterms.funderEPSRC
rioxxterms.identifier.projectPartnership for Research In Marine Renewable Energy (PRIMaRE)
rioxxterms.versionofrecord10.1049/rpg2.12229
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2021-06-07
rioxxterms.typeJournal Article/Review
plymouth.funderPartnership for Research In Marine Renewable Energy (PRIMaRE)::EPSRC
plymouth.funderPartnership for Research In Marine Renewable Energy (PRIMaRE)::EPSRC


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