This paper describes performance improvement of wave power absorption by using a new concept. Basic system proposed is an oscillating water column (OWC) type. An artificial harbor surrounded by projecting walls is installed. The type is called as PW-OWC in this paper. Standing waves occur in the artificial harbor, the absorbing device consequently has a resonance frequency differing from that of OWC. From the effect, the system is able to absorb wave power in very wide range of the wave frequency. From the experimental results, PW-OWC types are very good performance of wave power absorption comparing with conventional OWC types. In addition, the performance of the PW-OWC type is insensibility to the nozzle ratio of an orifice. The performance can be easily improved by installing the harbor part even if the performance of a base OWC device is not good. Finally, we investigate the expected values of acquirable wave power in not only a year but also every season. The expected values of PW-OWC types are greater than that of conventional OWC ones in seas around the Japanese islands.
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ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering
June 19–24, 2011
Rotterdam, The Netherlands
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4437-3
PROCEEDINGS PAPER
Expected Values of Wave Power Absorption Around the Japanese Islands Using OWC Types With Projecting Walls
Tomoki Ikoma,
Tomoki Ikoma
Nihon University, Funabashi, Chiba, Japan
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Hiroyuki Osawa,
Hiroyuki Osawa
Nihon University, Yokosuka, Kanagawa, Japan
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Koichi Masuda,
Koichi Masuda
Nihon University, Funabashi, Chiba, Japan
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Hiisaaki Maeda
Hiisaaki Maeda
Nihon University, Funabashi, Chiba, Japan
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Tomoki Ikoma
Nihon University, Funabashi, Chiba, Japan
Hiroyuki Osawa
Nihon University, Yokosuka, Kanagawa, Japan
Koichi Masuda
Nihon University, Funabashi, Chiba, Japan
Hiisaaki Maeda
Nihon University, Funabashi, Chiba, Japan
Paper No:
OMAE2011-49685, pp. 573-580; 8 pages
Published Online:
October 31, 2011
Citation
Ikoma, T, Osawa, H, Masuda, K, & Maeda, H. "Expected Values of Wave Power Absorption Around the Japanese Islands Using OWC Types With Projecting Walls." Proceedings of the ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. Volume 5: Ocean Space Utilization; Ocean Renewable Energy. Rotterdam, The Netherlands. June 19–24, 2011. pp. 573-580. ASME. https://doi.org/10.1115/OMAE2011-49685
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