Dynamic responses of a jacket-type offshore wind turbine using decoupled and coupled models
This paper presents numerical studies of the dynamic responses of a jacket-type offshore wind turbine using both decoupled and coupled models. In the decoupled (hydroelastic) model, the wind load is included through time-dependent forces and moments at a single node on the top of the tower. The coup...
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ftsintef:oai:sintef.brage.unit.no:11250/2468425 2023-05-15T14:22:47+02:00 Dynamic responses of a jacket-type offshore wind turbine using decoupled and coupled models Ong, Muk Chen Bachynski, Erin Elizabeth Økland, Ole David Passano, Elizabeth Anne 2014-06 application/pdf http://hdl.handle.net/11250/2468425 https://doi.org/10.1115/OMAE2014-24246 eng eng ASME Digital collection 33rd International Conference on Ocean, Offshore and Arctic Engineering Volume 9B: Ocean Renewable Energy ASME Proceedings %7C Ocean Renewable Energy;OMAE2014-24246 Norges forskningsråd: 193823 ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering - Volume 9B: Ocean Renewable Energy urn:isbn:978-0-7918-4554-7 http://hdl.handle.net/11250/2468425 https://doi.org/10.1115/OMAE2014-24246 cristin:1165409 Navngivelse-Ikkekommersiell-DelPåSammeVilkår 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-sa/4.0/deed.no The authors CC-BY-NC-SA Dynamic response Offshore wind turbines Chapter 2014 ftsintef https://doi.org/10.1115/OMAE2014-24246 2021-08-04T11:59:35Z This paper presents numerical studies of the dynamic responses of a jacket-type offshore wind turbine using both decoupled and coupled models. In the decoupled (hydroelastic) model, the wind load is included through time-dependent forces and moments at a single node on the top of the tower. The coupled model is a hydro-servo-aero-elastic representation of the system. The investigated structure is the OC4 (Offshore Code Comparison Collaboration Continuation) jacket foundation supporting the NREL 5-MW wind turbine in a water depth of 50m. Different operational wind and wave loadings at an offshore site with relatively high soil stiffness are investigated. The objective of this study is to evaluate the applicability of the computationally efficient linear decoupled model by comparing with the results obtained from the nonlinear coupled model. Good agreement was obtained in the eigen-frequency analysis, decay tests, and wave-only simulations. In order to obtain good results in the combined wind and wave simulations, two different strategies were applied in the decoupled model, which are 1) Wind loads obtained from the coupled model were applied directly as time-dependent point loads in the decoupled model; and 2) The thrust and torque from an isolated rotor model were used as wind loads on the decoupled model together with a linear aerodynamic damper. It was found that, by applying the thrust force from an isolated rotor model in combination with linear damping, reasonable agreement could be obtained between the decoupled and coupled models in combined wind and wave simulations. acceptedVersion Book Part Arctic SINTEF Open (Brage) Tower The ENVELOPE(-58.479,-58.479,-62.215,-62.215) Volume 9B: Ocean Renewable Energy |
institution |
Open Polar |
collection |
SINTEF Open (Brage) |
op_collection_id |
ftsintef |
language |
English |
topic |
Dynamic response Offshore wind turbines |
spellingShingle |
Dynamic response Offshore wind turbines Ong, Muk Chen Bachynski, Erin Elizabeth Økland, Ole David Passano, Elizabeth Anne Dynamic responses of a jacket-type offshore wind turbine using decoupled and coupled models |
topic_facet |
Dynamic response Offshore wind turbines |
description |
This paper presents numerical studies of the dynamic responses of a jacket-type offshore wind turbine using both decoupled and coupled models. In the decoupled (hydroelastic) model, the wind load is included through time-dependent forces and moments at a single node on the top of the tower. The coupled model is a hydro-servo-aero-elastic representation of the system. The investigated structure is the OC4 (Offshore Code Comparison Collaboration Continuation) jacket foundation supporting the NREL 5-MW wind turbine in a water depth of 50m. Different operational wind and wave loadings at an offshore site with relatively high soil stiffness are investigated. The objective of this study is to evaluate the applicability of the computationally efficient linear decoupled model by comparing with the results obtained from the nonlinear coupled model. Good agreement was obtained in the eigen-frequency analysis, decay tests, and wave-only simulations. In order to obtain good results in the combined wind and wave simulations, two different strategies were applied in the decoupled model, which are 1) Wind loads obtained from the coupled model were applied directly as time-dependent point loads in the decoupled model; and 2) The thrust and torque from an isolated rotor model were used as wind loads on the decoupled model together with a linear aerodynamic damper. It was found that, by applying the thrust force from an isolated rotor model in combination with linear damping, reasonable agreement could be obtained between the decoupled and coupled models in combined wind and wave simulations. acceptedVersion |
format |
Book Part |
author |
Ong, Muk Chen Bachynski, Erin Elizabeth Økland, Ole David Passano, Elizabeth Anne |
author_facet |
Ong, Muk Chen Bachynski, Erin Elizabeth Økland, Ole David Passano, Elizabeth Anne |
author_sort |
Ong, Muk Chen |
title |
Dynamic responses of a jacket-type offshore wind turbine using decoupled and coupled models |
title_short |
Dynamic responses of a jacket-type offshore wind turbine using decoupled and coupled models |
title_full |
Dynamic responses of a jacket-type offshore wind turbine using decoupled and coupled models |
title_fullStr |
Dynamic responses of a jacket-type offshore wind turbine using decoupled and coupled models |
title_full_unstemmed |
Dynamic responses of a jacket-type offshore wind turbine using decoupled and coupled models |
title_sort |
dynamic responses of a jacket-type offshore wind turbine using decoupled and coupled models |
publisher |
ASME Digital collection |
publishDate |
2014 |
url |
http://hdl.handle.net/11250/2468425 https://doi.org/10.1115/OMAE2014-24246 |
long_lat |
ENVELOPE(-58.479,-58.479,-62.215,-62.215) |
geographic |
Tower The |
geographic_facet |
Tower The |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
33rd International Conference on Ocean, Offshore and Arctic Engineering Volume 9B: Ocean Renewable Energy ASME Proceedings %7C Ocean Renewable Energy;OMAE2014-24246 Norges forskningsråd: 193823 ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering - Volume 9B: Ocean Renewable Energy urn:isbn:978-0-7918-4554-7 http://hdl.handle.net/11250/2468425 https://doi.org/10.1115/OMAE2014-24246 cristin:1165409 |
op_rights |
Navngivelse-Ikkekommersiell-DelPåSammeVilkår 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-sa/4.0/deed.no The authors |
op_rightsnorm |
CC-BY-NC-SA |
op_doi |
https://doi.org/10.1115/OMAE2014-24246 |
container_title |
Volume 9B: Ocean Renewable Energy |
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1766295311094906880 |