Fatigue load reductions in offshore wind turbine monopile foundations in co-located wind-wave arrays

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

Resumé

As offshore wind turbines (OWTs) increase in size and are placed farther offshore, hydrodynamic loads have increased contribution to total load, resulting in fatigue limit states becoming more important to consider in structural design. Previous literature shows that placing wave energy converters (WECs) peripherally to an OWT array results in a milder wave climate within the array. This reduction could affect the wave loads and fatigue damage of OWT support structures. In this exploratory study, the effect of peripherally-distributing WECs in front of a fixed-bottom OWT on the fatigue of the OWT monopile support structure is investigated. A method for quantifying relative sea state reductions from WECs are applied, and fully-coupled timedomain
fatigue analyses are performed for a 10 MW reference offshore wind turbine. Results indicate that a single WEC and a WEC array can lead to up to 8% and 10% fatigue load reduction in unidirectional wave cases, respectively.
OriginalsprogEngelsk
TitelProceedings of ASME 2018 1st International Offshore Wind Technical Conference
Antal sider10
ForlagAmerican Society of Mechanical Engineers
Publikationsdato2018
SiderV001T01A037
ArtikelnummerIOWTC2018-1024
ISBN (Elektronisk)978-0-7918-5197-5
DOI
StatusUdgivet - 2018
BegivenhedASME 2018 1st International Offshore Wind Technical Conference, IOWTC 2018 - San Francisco, USA
Varighed: 4 nov. 20187 nov. 2018

Konference

KonferenceASME 2018 1st International Offshore Wind Technical Conference, IOWTC 2018
LandUSA
BySan Francisco
Periode04/11/201807/11/2018
SponsorOcean, Offshore and Arctic Engineering Division

Fingerprint

Offshore wind turbines
Fatigue of materials
Fatigue damage
Structural design
Hydrodynamics

Emneord

  • Fatigue
  • Stress
  • Offshore wind turbines
  • Wind waves

Citer dette

Clark, C., Velarde, J., & Nielsen, J. S. (2018). Fatigue load reductions in offshore wind turbine monopile foundations in co-located wind-wave arrays. I Proceedings of ASME 2018 1st International Offshore Wind Technical Conference (s. V001T01A037). [IOWTC2018-1024] American Society of Mechanical Engineers. https://doi.org/10.1115/IOWTC2018-1024
Clark, Caitlyn ; Velarde, Joey ; Nielsen, Jannie Sønderkær. / Fatigue load reductions in offshore wind turbine monopile foundations in co-located wind-wave arrays. Proceedings of ASME 2018 1st International Offshore Wind Technical Conference. American Society of Mechanical Engineers, 2018. s. V001T01A037
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abstract = "As offshore wind turbines (OWTs) increase in size and are placed farther offshore, hydrodynamic loads have increased contribution to total load, resulting in fatigue limit states becoming more important to consider in structural design. Previous literature shows that placing wave energy converters (WECs) peripherally to an OWT array results in a milder wave climate within the array. This reduction could affect the wave loads and fatigue damage of OWT support structures. In this exploratory study, the effect of peripherally-distributing WECs in front of a fixed-bottom OWT on the fatigue of the OWT monopile support structure is investigated. A method for quantifying relative sea state reductions from WECs are applied, and fully-coupled timedomain fatigue analyses are performed for a 10 MW reference offshore wind turbine. Results indicate that a single WEC and a WEC array can lead to up to 8{\%} and 10{\%} fatigue load reduction in unidirectional wave cases, respectively. Copyright {\circledC} 2018 by ASME",
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Clark, C, Velarde, J & Nielsen, JS 2018, Fatigue load reductions in offshore wind turbine monopile foundations in co-located wind-wave arrays. i Proceedings of ASME 2018 1st International Offshore Wind Technical Conference., IOWTC2018-1024, American Society of Mechanical Engineers, s. V001T01A037, ASME 2018 1st International Offshore Wind Technical Conference, IOWTC 2018, San Francisco, USA, 04/11/2018. https://doi.org/10.1115/IOWTC2018-1024

Fatigue load reductions in offshore wind turbine monopile foundations in co-located wind-wave arrays. / Clark, Caitlyn; Velarde, Joey; Nielsen, Jannie Sønderkær.

Proceedings of ASME 2018 1st International Offshore Wind Technical Conference. American Society of Mechanical Engineers, 2018. s. V001T01A037 IOWTC2018-1024.

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

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N2 - As offshore wind turbines (OWTs) increase in size and are placed farther offshore, hydrodynamic loads have increased contribution to total load, resulting in fatigue limit states becoming more important to consider in structural design. Previous literature shows that placing wave energy converters (WECs) peripherally to an OWT array results in a milder wave climate within the array. This reduction could affect the wave loads and fatigue damage of OWT support structures. In this exploratory study, the effect of peripherally-distributing WECs in front of a fixed-bottom OWT on the fatigue of the OWT monopile support structure is investigated. A method for quantifying relative sea state reductions from WECs are applied, and fully-coupled timedomain fatigue analyses are performed for a 10 MW reference offshore wind turbine. Results indicate that a single WEC and a WEC array can lead to up to 8% and 10% fatigue load reduction in unidirectional wave cases, respectively. Copyright © 2018 by ASME

AB - As offshore wind turbines (OWTs) increase in size and are placed farther offshore, hydrodynamic loads have increased contribution to total load, resulting in fatigue limit states becoming more important to consider in structural design. Previous literature shows that placing wave energy converters (WECs) peripherally to an OWT array results in a milder wave climate within the array. This reduction could affect the wave loads and fatigue damage of OWT support structures. In this exploratory study, the effect of peripherally-distributing WECs in front of a fixed-bottom OWT on the fatigue of the OWT monopile support structure is investigated. A method for quantifying relative sea state reductions from WECs are applied, and fully-coupled timedomain fatigue analyses are performed for a 10 MW reference offshore wind turbine. Results indicate that a single WEC and a WEC array can lead to up to 8% and 10% fatigue load reduction in unidirectional wave cases, respectively. Copyright © 2018 by ASME

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KW - Wind waves

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Clark C, Velarde J, Nielsen JS. Fatigue load reductions in offshore wind turbine monopile foundations in co-located wind-wave arrays. I Proceedings of ASME 2018 1st International Offshore Wind Technical Conference. American Society of Mechanical Engineers. 2018. s. V001T01A037. IOWTC2018-1024 https://doi.org/10.1115/IOWTC2018-1024