Shapes and statistics of the rogue waves generated by chaotic ocean current

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dc.authorid0000-0002-3654-0469
dc.contributor.authorBayındır, Cihanen_US
dc.date.accessioned2016-10-24T22:18:18Z
dc.date.available2016-10-24T22:18:18Z
dc.date.issued2016
dc.departmentIşık Üniversitesi, Mühendislik Fakültesi, İnşaat Mühendisliği Bölümüen_US
dc.departmentIşık University, Faculty of Engineering, Department of Civil Engineeringen_US
dc.description.abstractIn this study we discuss the shapes and statistics of the rogue (freak) waves emerging due to wave-current interactions. With this purpose, we use a simple governing equation which is a nonlinear Schrödinger equation (NLSE) extended by R. Smith (1976). This extended NLSE accounts for the effects of current gradient on the nonlinear dynamics of the ocean surface near blocking point. Using a split-step scheme we show that the extended NLSE of Smith is unstable against random chaotic perturbation in the current profile. Therefore the monochromatic wave field with unit amplitude turns into a chaotic sea state with many peaks. By comparing the numerical and analytical results, we show that rogue waves due to perturbations in the current profile are in the form of rational rogue wave solutions of the NLSE. We also discuss the effects of magnitude of the chaotic current profile perturbations on the statistics of the rogue wave generation at the ocean surface. The extension term in Smith's extended NLSE causes phase shifts and it does not change the total energy level of the wave field. Using the methodology adopted in this study, the dynamics of rogue wave occurrence on the ocean surface due to blocking effect of currents can be studied. This enhances the safety of the offshore operations and ocean travel.en_US
dc.description.versionPublisher's Versionen_US
dc.identifier.citationBayındır, C. (2016). Shapes and statistics of the rogue waves generated by chaotic ocean current. Paper presented at the Proceedings of the International Offshore and Polar Engineering Conference, 2016-January, 641-645.en_US
dc.identifier.endpage645
dc.identifier.isbn9781880653883
dc.identifier.issn1098-6189
dc.identifier.scopus2-s2.0-84987876600
dc.identifier.scopusqualityN/A
dc.identifier.startpage641
dc.identifier.urihttps://hdl.handle.net/11729/1141
dc.identifier.volume2016-January
dc.indekslendigikaynakScopusen_US
dc.institutionauthorBayındır, Cihanen_US
dc.institutionauthorid0000-0002-3654-0469
dc.language.isoenen_US
dc.peerreviewedYesen_US
dc.publicationstatusPublisheden_US
dc.publisherInternational Society of Offshore and Polar Engineersen_US
dc.relation.ispartofProceedings of the International Offshore and Polar Engineering Conferenceen_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectChaotic perturbationsen_US
dc.subjectNonlinear Schrödinger equationen_US
dc.subjectRogue wavesen_US
dc.subjectWavecurrent interactionen_US
dc.subjectNonlinear equationsen_US
dc.subjectOceanographyen_US
dc.subjectPhase shiften_US
dc.subjectAnalytical resultsen_US
dc.subjectDinger equationen_US
dc.subjectGoverning equationsen_US
dc.subjectMonochromatic waveen_US
dc.subjectOffshore operationsen_US
dc.subjectOcean currentsen_US
dc.titleShapes and statistics of the rogue waves generated by chaotic ocean currenten_US
dc.typeConference Objecten_US
dspace.entity.typePublication

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