Performance of counter-rotating tandem propellers at oblique flow conditions

Nak Joong Lee, Morihito Inagaki, Toshiaki Kanemoto

研究成果: Conference article査読

6 被引用数 (Scopus)


Tidal currents are a potential source of reliable and renewable energy. Various power generation systems have been proposed. The authors developed a counter-rotating type tidal stream power unit in which the tandem runners make the inner and the outer armatures counter-rotate. The unit is composed of tandem propellers with 3 front and 5 rear blades and has a promising advantage that the rotational torque between the front runner and the rear propellers, namely the inner and the outer armatures, is balanced in the unit. That is, this tidal stream power unit can be moored with only one cable and then its nose and tail will naturally line up in response to the tidal stream by yawing. In this paper, the performance of the propellers in oblique flow conditions were investigated experimentally and numerically. When the coming flow obliquely to the propeller by 30 degrees, the performance deteriorates by 20%.

ジャーナルIOP Conference Series: Earth and Environmental Science
出版ステータスPublished - 2019 3月 28
イベント29th IAHR Symposium on Hydraulic Machinery and Systems, IAHR 2018 - Kyoto, Japan
継続期間: 2018 9月 162018 9月 21

ASJC Scopus subject areas

  • 環境科学(全般)
  • 地球惑星科学(全般)


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