A new design concept of a semi-submersible type floating offshore wind turbine (FOWT) moored by a single-point mooring is proposed. The FOWT model adopting 5MW class wind turbine is designed. The motion characteristics of the FOWT are evaluated by a series of tank tests. To this end, a scaled model with a scale ratio 1/100 is fabricated. The scaled mode tests are performed under winds, waves, and combined winds and waves to check its fundamental feasibility. It is observed that the motion characteristics under wind and waves are acceptable in general, and the combination of the single point mooring and the down-wind type rotor is effective in terms of weathervane. It is also shown that the difference between the two transfer functions to wave loads, one with and the other without wind loads, is small except pitch response at low frequencies.
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ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering
June 9–14, 2013
Nantes, France
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-5542-3
PROCEEDINGS PAPER
Conceptual Design of a Single-Point-Moored FOWT and Tank Test for Its Motion Characteristics
Y. Nihei,
Y. Nihei
Osaka Prefecture University, Osaka, Japan
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M. Murai,
M. Murai
Yokohama National University, Kanagawa, Japan
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T. Ikoma
T. Ikoma
Nihon University, Chiba, Japan
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K. Iijima
Osaka University, Osaka, Japan
M. Kawai
Osaka University, Osaka, Japan
Y. Nihei
Osaka Prefecture University, Osaka, Japan
M. Murai
Yokohama National University, Kanagawa, Japan
T. Ikoma
Nihon University, Chiba, Japan
Paper No:
OMAE2013-11259, V008T09A079; 8 pages
Published Online:
November 26, 2013
Citation
Iijima, K, Kawai, M, Nihei, Y, Murai, M, & Ikoma, T. "Conceptual Design of a Single-Point-Moored FOWT and Tank Test for Its Motion Characteristics." Proceedings of the ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. Volume 8: Ocean Renewable Energy. Nantes, France. June 9–14, 2013. V008T09A079. ASME. https://doi.org/10.1115/OMAE2013-11259
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