Application of simple harmonic motion theory to the prediction of floating wind turbine first order motions

Mackie, G.; Pacheco, André; Sequeira, C.

Publication

Application of simple harmonic motion theory to the prediction of floating wind turbine first order motions

2023Journal article

dc.contributor.author	Mackie, G.
dc.contributor.author	Pacheco, André
dc.contributor.author	Sequeira, C.
dc.date.accessioned	2023-03-03T21:29:23Z
dc.date.available	2023-03-03T21:29:23Z
dc.date.embargo	2025-01-25
dc.date.issued	2023
dc.description.abstract	An alternative solution for achieving a high stability floating foundation for supporting large horizontal axis wind turbines is compared against current floating offshore wind solutions. The testing of a 1:36th scale model of the solution, called Starfloat, in the wind/wave basin of the Cantabria Coastal and Ocean Basin, Santander and the design of this physical model, including scaling issues, is discussed. A method for calculating the added mass of entrained water in heave and surge and the added mass moment of inertia in pitch for semi-submerged cy-lindrical columns is presented and the computed natural periods of motion are compared against physical trial measurements obtained from motion decay tests. The wave forces exciting the simple harmonic motion are calculated and the resultant approximate solution for the uncoupled floating platform motions in heave, pitch and surge are compared against response amplitude operator curves obtained from the physical model trials, showing reasonable correlation. The importance of depth correction for wave particle velocities and accelera-tions is very evident and emphasises the need for physical models to be exposed to the correct orbital particle motions over the water column if measured pitch and surge motions are to be a realistic representation of full scale performance.	pt_PT
dc.description.version	info:eu-repo/semantics/acceptedVersion	pt_PT
dc.identifier.doi	10.1016/j.oceaneng.2023.113710	pt_PT
dc.identifier.issn	0029-8018
dc.identifier.uri	http://hdl.handle.net/10400.1/19197
dc.language.iso	eng	pt_PT
dc.peerreviewed	yes	pt_PT
dc.publisher	Elsevier	pt_PT
dc.relation	Centre for Marine and Environmental Research (CIMA)
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject	Simple harmonic motion	pt_PT
dc.subject	Floating offshore wind	pt_PT
dc.subject	Starfloat	pt_PT
dc.subject	Physical testing	pt_PT
dc.subject	Heave	pt_PT
dc.subject	Surge and Pitch motion	pt_PT
dc.title	Application of simple harmonic motion theory to the prediction of floating wind turbine first order motions	pt_PT
dc.type	journal article
dspace.entity.type	Publication
oaire.awardTitle	Centre for Marine and Environmental Research (CIMA)
oaire.awardURI	info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00350%2F2020/PT
oaire.citation.startPage	113710	pt_PT
oaire.citation.title	Ocean Engineering	pt_PT
oaire.citation.volume	271	pt_PT
oaire.fundingStream	6817 - DCRRNI ID
person.familyName	Pacheco
person.givenName	André
person.identifier.ciencia-id	8014-35C4-8806
person.identifier.orcid	0000-0002-8340-0629
person.identifier.scopus-author-id	55432603300
project.funder.identifier	http://doi.org/10.13039/501100001871
project.funder.name	Fundação para a Ciência e a Tecnologia
rcaap.rights	embargoedAccess	pt_PT
rcaap.type	article	pt_PT
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