Hydro-Servo-Aero-Elastic Analysis of Floating Offshore Wind Turbines
A fully coupled hydro-servo-aero-elastic simulator for the analysis of floating offshore wind turbines (FOWTs) is presented. All physical aspects are addressed, and the corresponding equations are concurrently solved within the same computational framework, taking into account the wind and wave exci...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-11-01
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| Series: | Fluids |
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| Online Access: | https://www.mdpi.com/2311-5521/5/4/200 |
| _version_ | 1797548740769218560 |
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| author | Dimitris I. Manolas Vasilis A. Riziotis George P. Papadakis Spyros G. Voutsinas |
| author_facet | Dimitris I. Manolas Vasilis A. Riziotis George P. Papadakis Spyros G. Voutsinas |
| author_sort | Dimitris I. Manolas |
| collection | DOAJ |
| description | A fully coupled hydro-servo-aero-elastic simulator for the analysis of floating offshore wind turbines (FOWTs) is presented. All physical aspects are addressed, and the corresponding equations are concurrently solved within the same computational framework, taking into account the wind and wave excitations, the aerodynamic response of the rotor, the hydrodynamic response of the floater, the structural dynamics of the turbine-floater-mooring lines assembly and finally the control system of the wind turbine. The components of the complex multi-physics system of a FOWT interact with each other in an implicitly coupled manner leading to a holistic type of modeling. Different modeling options, of varying fidelity and computational cost, are made available with respect to rotor aerodynamics, hydrodynamic loading of the floater and mooring system dynamics that allow for timely routine certification simulations, but also for computationally intense simulations of less conventional operating states. Structural dynamics is based on nonlinear multibody analysis that allows reproducing the large rigid body motions undergone by the FOWT, as well as large deflections and rotations of the highly flexible blades. The paper includes the description of the main physical models, of the interaction and solution strategy and representative results. Verification is carried out by comparing with other state-of-art tools that participated in the Offshore Code Comparison Collaboration Continuation (OC4) IEA Annex, while the advanced simulation capabilities are demonstrated in the case of half-wake interaction of floating wind turbines by employing the free-wake aerodynamic method. |
| first_indexed | 2024-03-10T15:03:57Z |
| format | Article |
| id | doaj.art-556075c5dbfc4077962072ecb4a4510b |
| institution | Directory Open Access Journal |
| issn | 2311-5521 |
| language | English |
| last_indexed | 2024-03-10T15:03:57Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fluids |
| spelling | doaj.art-556075c5dbfc4077962072ecb4a4510b2023-11-20T19:55:14ZengMDPI AGFluids2311-55212020-11-015420010.3390/fluids5040200Hydro-Servo-Aero-Elastic Analysis of Floating Offshore Wind TurbinesDimitris I. Manolas0Vasilis A. Riziotis1George P. Papadakis2Spyros G. Voutsinas3School of Mechanical Engineering, National Technical University of Athens, GR15780 Zografos, Athens, GreeceSchool of Mechanical Engineering, National Technical University of Athens, GR15780 Zografos, Athens, GreeceSchool of Naval Architecture and Marine Engineering, National Technical University of Athens, GR15780 Zografos, Athens, GreeceSchool of Mechanical Engineering, National Technical University of Athens, GR15780 Zografos, Athens, GreeceA fully coupled hydro-servo-aero-elastic simulator for the analysis of floating offshore wind turbines (FOWTs) is presented. All physical aspects are addressed, and the corresponding equations are concurrently solved within the same computational framework, taking into account the wind and wave excitations, the aerodynamic response of the rotor, the hydrodynamic response of the floater, the structural dynamics of the turbine-floater-mooring lines assembly and finally the control system of the wind turbine. The components of the complex multi-physics system of a FOWT interact with each other in an implicitly coupled manner leading to a holistic type of modeling. Different modeling options, of varying fidelity and computational cost, are made available with respect to rotor aerodynamics, hydrodynamic loading of the floater and mooring system dynamics that allow for timely routine certification simulations, but also for computationally intense simulations of less conventional operating states. Structural dynamics is based on nonlinear multibody analysis that allows reproducing the large rigid body motions undergone by the FOWT, as well as large deflections and rotations of the highly flexible blades. The paper includes the description of the main physical models, of the interaction and solution strategy and representative results. Verification is carried out by comparing with other state-of-art tools that participated in the Offshore Code Comparison Collaboration Continuation (OC4) IEA Annex, while the advanced simulation capabilities are demonstrated in the case of half-wake interaction of floating wind turbines by employing the free-wake aerodynamic method.https://www.mdpi.com/2311-5521/5/4/200wind energyoffshore wind turbinesfloating wind turbinesmultibody dynamicsfinite element method (FEM) modelsfree-wake aerodynamics |
| spellingShingle | Dimitris I. Manolas Vasilis A. Riziotis George P. Papadakis Spyros G. Voutsinas Hydro-Servo-Aero-Elastic Analysis of Floating Offshore Wind Turbines Fluids wind energy offshore wind turbines floating wind turbines multibody dynamics finite element method (FEM) models free-wake aerodynamics |
| title | Hydro-Servo-Aero-Elastic Analysis of Floating Offshore Wind Turbines |
| title_full | Hydro-Servo-Aero-Elastic Analysis of Floating Offshore Wind Turbines |
| title_fullStr | Hydro-Servo-Aero-Elastic Analysis of Floating Offshore Wind Turbines |
| title_full_unstemmed | Hydro-Servo-Aero-Elastic Analysis of Floating Offshore Wind Turbines |
| title_short | Hydro-Servo-Aero-Elastic Analysis of Floating Offshore Wind Turbines |
| title_sort | hydro servo aero elastic analysis of floating offshore wind turbines |
| topic | wind energy offshore wind turbines floating wind turbines multibody dynamics finite element method (FEM) models free-wake aerodynamics |
| url | https://www.mdpi.com/2311-5521/5/4/200 |
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