Effect of Heave Plates on the Wave Motion of a Flexible Multicolumn FOWT

Taisuke Takata; Mayuko Takaoka; Hidetaka Houtani; Kentaro Hara; Sho Oh; Edgard B. Malta; Kazuhiro Iijima; Hideyuki Suzuki; Rodolfo T. Gonçalves

doi:10.3390/en15207605

Energies (Oct 2022)

Effect of Heave Plates on the Wave Motion of a Flexible Multicolumn FOWT

Taisuke Takata,
Mayuko Takaoka,
Hidetaka Houtani,
Kentaro Hara,
Sho Oh,
Edgard B. Malta,
Kazuhiro Iijima,
Hideyuki Suzuki,
Rodolfo T. Gonçalves

Affiliations

Taisuke Takata: OSPL—Ocean Space Planning Laboratory, Department of Systems Innovation, The University of Tokyo, Tokyo 113-8657, Japan
Mayuko Takaoka: OSPL—Ocean Space Planning Laboratory, Department of Systems Innovation, The University of Tokyo, Tokyo 113-8657, Japan
Hidetaka Houtani: OSPL—Ocean Space Planning Laboratory, Department of Systems Innovation, The University of Tokyo, Tokyo 113-8657, Japan
Kentaro Hara: Ship Structure Integrity Subarea, Department of Naval Architecture and Ocean Engineering, Osaka University, Osaka 565-0871, Japan
Sho Oh: ClassNK—Nippon Kaiji Kyokai, Tokyo 102-8567, Japan
Edgard B. Malta: Technomar Engenharia Oceânica, São Paulo 05419-905, Brazil
Kazuhiro Iijima: Ship Structure Integrity Subarea, Department of Naval Architecture and Ocean Engineering, Osaka University, Osaka 565-0871, Japan
Hideyuki Suzuki: OSPL—Ocean Space Planning Laboratory, Department of Systems Innovation, The University of Tokyo, Tokyo 113-8657, Japan
Rodolfo T. Gonçalves: OSPL—Ocean Space Planning Laboratory, Department of Systems Innovation, The University of Tokyo, Tokyo 113-8657, Japan

DOI: https://doi.org/10.3390/en15207605
Journal volume & issue: Vol. 15, no. 20
p. 7605

Abstract

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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.

Published in Energies

ISSN: 1996-1073 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology
Website: http://www.mdpi.com/journal/energies

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