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dc.contributor.authorEdesess, AJen
dc.contributor.authorKelliher, Den
dc.contributor.authorBorthwick, AGLen
dc.contributor.authorThomas, Gen
dc.date.accessioned2021-08-22T18:11:47Z
dc.date.available2021-08-22T18:11:47Z
dc.date.issued2017-01-01en
dc.identifier.issn1876-6102en
dc.identifier.urihttp://hdl.handle.net/10026.1/17724
dc.description.abstract

Improved access to renewable energy in developing economies will be a major factor in future global efforts to reduce CO2 emissions, while simultaneously raising living conditions in areas presently without or with only limited access to electricity. Coastal populations stand to benefit greatly from reduced costs of offshore wind farms, which are one of the fastest growing and most economical sources of marine renewable energy. A considerable drawback of offshore wind power is the high cost of operations and maintenance (O&M), which can account for 25-50% of total energy production costs. Present-day maintenance procedures, using crew transfer vessels, rely on the significant wave height (HS) as the limiting factor by which to decide whether or not it is safe to access the offshore turbines. In practice, HS has to be applied conservatively, thus raising the costs through increased downtime. A method is proposed here with the objective of reducing overall costs through improved analysis of the motion of the crew transfer vessels (CTVs) used to transport repair technicians onto offshore wind turbine structures. CTV motion depends on the hydrodynamic forces incident on the vessel under operating conditions and the effect that the presence of the turbine has on the flow field. A change in the hydrodynamic field caused by the turbine monopile can cause a vessel abutted against the turbine support column to lose frictional contact and slip. Using the open-source computational fluid dynamics software, OpenFOAM, and in situ experimental results, the diffracted surface elevation and a wave kinematics model for the near-wake of a turbine monopile are presented. More accurate estimates of significant wave height and wave kinematics incident on a vessel close to a turbine monopile will facilitate much improved analysis of vessel motions under operational conditions.

en
dc.format.extent1055 - 1060en
dc.language.isoenen
dc.titleImproving global accessibility to offshore wind power through decreased operations and maintenance costs: A hydrodynamic analysisen
dc.typeConference Contribution
plymouth.volume138en
plymouth.publication-statusPublisheden
plymouth.journalEnergy Procediaen
dc.identifier.doi10.1016/j.egypro.2017.10.107en
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/Users by role
plymouth.organisational-group/Plymouth/Users by role/Academics
dc.rights.embargoperiodNot knownen
rioxxterms.versionofrecord10.1016/j.egypro.2017.10.107en
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.typeConference Paper/Proceeding/Abstracten


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