Effect of Heave Plates on the Wave Motion of a Flexible Multicolumn FOWT
Abstract
Three models with different footing types were used to clarify the effect of heave plates on the hydrodynamic behavior of the elastic response of a flexible multicolumn floating offshore wind
turbine (FOWT). The models were tested under regular waves, whose added mass, damping, and motion response results were compared with numerical simulations by NK-UTWind and WAMIT
codes.
As a whole, the attachment of heave plates was responsible for increasing the added mass and damping levels, consequently modifying the RAO of the models.
Regarding the response in a sea condition, a decrease of 33% and 66% of the significant motion height (heave and pitch) was observed. Thus, the heave plate can be a good feature for the future design of FOWT.
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2022 – Takata et al – Effect of Heave Plates on the Wave Motion of a Flexible Multicolumn FOWT
Keywords
floating offshore wind turbine (FOWT); heave plate; elastic characteristics; wave tests
Authors
- Taisuke Takata 1
- Mayuko Takaoka 1
- Hidetaka Houtani 1
- Kentaro Hara 2
- Sho Oh 3
- Edgard B. Malta 4
- Kazuhiro Iijima 2
- Hideyuki Suzuki 1
- Rodolfo T. Gonçalves 1*
1 OSPL—Ocean Space Planning Laboratory, Department of Systems Innovation, The University of Tokyo,
Tokyo 113-8657, Japan
2 Ship Structure Integrity Subarea, Department of Naval Architecture and Ocean Engineering,
Osaka University, Osaka 565-0871, Japan
3 ClassNK—Nippon Kaiji Kyokai, Tokyo 102-8567, Japan
4 Technomar Engenharia Oceânica, São Paulo 05419-905, Brazil
* Correspondence: goncalves@g.ecc.u-tokyo.ac.jp; Tel.: +81-3-5841-0480