Effects of Second-Order Hydrodynamics on the Dynamic Responses and Fatigue Damage of a 15 MW Floating Offshore Wind Turbine

In order to investigate the effects of second-order hydrodynamic loads on a 15 MW floating offshore wind turbine (FOWT), this study employs a tool that integrates AQWA and OpenFAST to conduct fully coupled simulations of the FOWT subjected to wind and wave loadings. The load cases covering normal an...

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Autores principales:	Xuan Mei, Min Xiong
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	second-order hydrodynamics dynamic responses fatigue damage 15 MW floating offshore wind turbine Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581
Acceso en línea:	https://doaj.org/article/e491e6b6e24a4b32824deae0291561ad
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id	oai:doaj.org-article:e491e6b6e24a4b32824deae0291561ad
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spelling	oai:doaj.org-article:e491e6b6e24a4b32824deae0291561ad2021-11-25T18:04:33ZEffects of Second-Order Hydrodynamics on the Dynamic Responses and Fatigue Damage of a 15 MW Floating Offshore Wind Turbine10.3390/jmse91112322077-1312https://doaj.org/article/e491e6b6e24a4b32824deae0291561ad2021-11-01T00:00:00Zhttps://www.mdpi.com/2077-1312/9/11/1232https://doaj.org/toc/2077-1312In order to investigate the effects of second-order hydrodynamic loads on a 15 MW floating offshore wind turbine (FOWT), this study employs a tool that integrates AQWA and OpenFAST to conduct fully coupled simulations of the FOWT subjected to wind and wave loadings. The load cases covering normal and extreme conditions are defined based on the met-ocean data observed at a specific site. The results indicate that the second-order wave excitations activate the surge mode of the platform. As a result, the surge motion is increased for each of the examined load case. In addition, the pitch, heave, and yaw motions are underestimated when neglecting the second-order hydrodynamics under the extreme condition. First-order wave excitation is the major contributor to the tower-base bending moments. The fatigue damage of the tower-base under the extreme condition is underestimated by 57.1% if the effect of second-order hydrodynamics is ignored. In addition, the accumulative fatigue damage over 25 years at the tower-base is overestimated by 16.92%. Therefore, it is suggested to consider the effects of second-order wave excitations of the floating platform for the design of the tower to reduce the cost of the FOWT.Xuan MeiMin XiongMDPI AGarticlesecond-order hydrodynamicsdynamic responsesfatigue damage15 MW floating offshore wind turbineNaval architecture. Shipbuilding. Marine engineeringVM1-989OceanographyGC1-1581ENJournal of Marine Science and Engineering, Vol 9, Iss 1232, p 1232 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	second-order hydrodynamics dynamic responses fatigue damage 15 MW floating offshore wind turbine Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581
spellingShingle	second-order hydrodynamics dynamic responses fatigue damage 15 MW floating offshore wind turbine Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 Xuan Mei Min Xiong Effects of Second-Order Hydrodynamics on the Dynamic Responses and Fatigue Damage of a 15 MW Floating Offshore Wind Turbine
description	In order to investigate the effects of second-order hydrodynamic loads on a 15 MW floating offshore wind turbine (FOWT), this study employs a tool that integrates AQWA and OpenFAST to conduct fully coupled simulations of the FOWT subjected to wind and wave loadings. The load cases covering normal and extreme conditions are defined based on the met-ocean data observed at a specific site. The results indicate that the second-order wave excitations activate the surge mode of the platform. As a result, the surge motion is increased for each of the examined load case. In addition, the pitch, heave, and yaw motions are underestimated when neglecting the second-order hydrodynamics under the extreme condition. First-order wave excitation is the major contributor to the tower-base bending moments. The fatigue damage of the tower-base under the extreme condition is underestimated by 57.1% if the effect of second-order hydrodynamics is ignored. In addition, the accumulative fatigue damage over 25 years at the tower-base is overestimated by 16.92%. Therefore, it is suggested to consider the effects of second-order wave excitations of the floating platform for the design of the tower to reduce the cost of the FOWT.
format	article
author	Xuan Mei Min Xiong
author_facet	Xuan Mei Min Xiong
author_sort	Xuan Mei
title	Effects of Second-Order Hydrodynamics on the Dynamic Responses and Fatigue Damage of a 15 MW Floating Offshore Wind Turbine
title_short	Effects of Second-Order Hydrodynamics on the Dynamic Responses and Fatigue Damage of a 15 MW Floating Offshore Wind Turbine
title_full	Effects of Second-Order Hydrodynamics on the Dynamic Responses and Fatigue Damage of a 15 MW Floating Offshore Wind Turbine
title_fullStr	Effects of Second-Order Hydrodynamics on the Dynamic Responses and Fatigue Damage of a 15 MW Floating Offshore Wind Turbine
title_full_unstemmed	Effects of Second-Order Hydrodynamics on the Dynamic Responses and Fatigue Damage of a 15 MW Floating Offshore Wind Turbine
title_sort	effects of second-order hydrodynamics on the dynamic responses and fatigue damage of a 15 mw floating offshore wind turbine
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/e491e6b6e24a4b32824deae0291561ad
work_keys_str_mv	AT xuanmei effectsofsecondorderhydrodynamicsonthedynamicresponsesandfatiguedamageofa15mwfloatingoffshorewindturbine AT minxiong effectsofsecondorderhydrodynamicsonthedynamicresponsesandfatiguedamageofa15mwfloatingoffshorewindturbine
_version_	1718411714730393600

Effects of Second-Order Hydrodynamics on the Dynamic Responses and Fatigue Damage of a 15 MW Floating Offshore Wind Turbine

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