Counter-rotating turbine in unique power unit provided for bidirectional tidal streams

Toshiaki Kanemoto, Nak Joong Lee, Man Woong Heo, Bin Huang, Yuji Nakanishi, Yuki Funami

研究成果: Conference contribution

抄録

The energy from a tidal stream is abundant and renewable resource whose power is predictable and sustainable. To generate power effectively from the stream a unique counter rotating type tidal stream power unit, whose tandem rotors drive inner and outer armatures in a generator, has been provided by the authors. At the tidal power station located in narrow straits, the unit needs to be reoriented so that useful output power can be obtained from both flood and ebbing tides. In this paper, the counter rotating tandem rotor turbine was designed for operation in a bidirectional tidal stream and the performance was analyzed. The maximum output power is somewhat lower than that of the rotors designed exclusively for a unidirectional stream. The relative flow has a positive angle of attack at the leading edge and discharges from the trailing edge along the blade camber. The angular momentum change, namely the rotor work, is seen to always be accompanied with a shock loss at the leading edge.

本文言語English
ホスト出版物のタイトルProceedings of the 12th ISOPE Pacific-Asia Offshore Mechanics Symposium, PACOMS 2016
編集者Jin S. Chung
出版社International Society of Offshore and Polar Engineers
ページ254-258
ページ数5
ISBN(電子版)9781880653982
出版ステータスPublished - 2016
外部発表はい
イベント12th ISOPE Pacific-Asia Offshore Mechanics Symposium, PACOMS 2016 - Gold Coast, Australia
継続期間: 2016 10 42016 10 7

出版物シリーズ

名前Proceedings of the 12th ISOPE Pacific-Asia Offshore Mechanics Symposium, PACOMS 2016

Conference

Conference12th ISOPE Pacific-Asia Offshore Mechanics Symposium, PACOMS 2016
国/地域Australia
CityGold Coast
Period16/10/416/10/7

ASJC Scopus subject areas

  • 海洋工学
  • 地盤工学および土木地質学
  • 機械工学

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