Seakeeping Tests of a FOWT in Wind and Waves: An Analysis of Dynamic Coupling Effects and Their Impact on the Predictions of Pitch Motion Response
| Autor: | Guilherme Rosa Franzini, Hideyuki Suzuki, Lucas H. S. do Carmo, Alexandre N. Simos, Edgard Borges Malta, Pedro Cardozo de Mello, Izabela F. Alberto, Giovanni A. Amaral, Rodolfo T. Gonçalves |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Ballast
020209 energy 020101 civil engineering Ocean Engineering Thrust 02 engineering and technology Seakeeping 0201 civil engineering Dynamic coupling lcsh:Oceanography lcsh:VM1-989 Catenary 0202 electrical engineering electronic engineering information engineering lcsh:GC1-1581 automotive_engineering Water Science and Technology Civil and Structural Engineering seakeeping model tests Coupling Physics Motion response lcsh:Naval architecture. Shipbuilding. Marine engineering Mechanics Mooring FOWT dynamics Offshore wind power Frequency domain dynamic coupling effects pitch motion response Geology Marine engineering |
| Zdroj: | Journal of Marine Science and Engineering, Vol 9, Iss 179, p 179 (2021) Journal of Marine Science and Engineering Volume 9 Issue 2 |
| ISSN: | 2077-1312 |
| Popis: | The present work highlights some of the dynamic couplings observed in a series of tests performed in a wave basin with a scaled-model of a Floating Offshore Wind Turbine (FOWT) with semi-submersible substructure. The model was moored by means of a conventional chain catenary system and an actively controlled fan was used for emulating the thrust loads during the tests. A set of wave tests was performed for concomitant effects of not aligned wave and wind. The experimental measurements illustrate the main coupling effects involved and how they affect the FOWT motions in waves, especially when the floater presents a non-negligible tilt angle. In addition, a frequency domain numerical analysis was performed in order to evaluate its ability to capture these effects properly. The influence of different modes of fan response, floater trim angles (changeable with ballast compensation) and variations in the mooring stiffness with the offsets were investigated in the analysis. Results attest that significant changes in the FOWT responses may indeed arise from coupling effects, thus indicating that caution must be taken when simplifying the hydrodynamic frequency-domain models often used as a basis for the simulation of FOWTs in waves and in optimization procedures for the design of the floater and mooring lines. |
| Databáze: | OpenAIRE |
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