This paper presents the unique ocean wave power station, which is composed of the floating type platform with a pair of the floats lined up at the interval of one wave length and the counter-rotating type power unit submerged in the seawater at the middle position of the platform. Such profiles make the flow velocity through the turbines two times faster than that of the traditional OWC types, and make the turbine diameter large as possible because the rotational moment hardly acts on the platform. The previous paper verified that the station is effective to get the power from the ocean wave at the normally oscillating motion. Continuously, this paper discusses the effect of the wave length on the motion of the platform and present the flow conditions around Wells type hydraulic turbine in CFD. The platform in which the floats are at the symmetrical position to the anti-node oscillates normally irrespective of the stationary wave length. On the contrary, the platform with the floats the asymmetrically arranged or being at the progressive wave plays in the dutch-roll condition and does not get the fruitful power.
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ASME-JSME-KSME 2011 Joint Fluids Engineering Conference
July 24–29, 2011
Hamamatsu, Japan
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-4440-3
PROCEEDINGS PAPER
Floating Type Ocean Wave Power Station (Unique Work of Oscillating Platform)
Takahiro Otsubo,
Takahiro Otsubo
Kyushu Institute of Technology, Kitakyushu, Fukuoka, Japan
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Masayuki Orita,
Masayuki Orita
Kyushu Institute of Technology, Kitakyushu, Fukuoka, Japan
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Tatsuya Kinoshita,
Tatsuya Kinoshita
Kyushu Institute of Technology, Kitakyushu, Fukuoka, Japan
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Toshiaki Kanemoto,
Toshiaki Kanemoto
Kyushu Institute of Technology, Kitakyushu, Fukuoka, Japan
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Kiyoshi Kokubu
Kiyoshi Kokubu
Kyushu Institute of Technology, Kitakyushu, Fukuoka, Japan
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Takahiro Otsubo
Kyushu Institute of Technology, Kitakyushu, Fukuoka, Japan
Masayuki Orita
Kyushu Institute of Technology, Kitakyushu, Fukuoka, Japan
Tatsuya Kinoshita
Kyushu Institute of Technology, Kitakyushu, Fukuoka, Japan
Toshiaki Kanemoto
Kyushu Institute of Technology, Kitakyushu, Fukuoka, Japan
Kiyoshi Kokubu
Kyushu Institute of Technology, Kitakyushu, Fukuoka, Japan
Paper No:
AJK2011-07024, pp. 1937-1942; 6 pages
Published Online:
May 25, 2012
Citation
Otsubo, T, Orita, M, Kinoshita, T, Kanemoto, T, & Kokubu, K. "Floating Type Ocean Wave Power Station (Unique Work of Oscillating Platform)." Proceedings of the ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D. Hamamatsu, Japan. July 24–29, 2011. pp. 1937-1942. ASME. https://doi.org/10.1115/AJK2011-07024
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