Approximate method for estimating the blade performance of Darrieus-type cross-flow water turbines

Akinori Furukawa, Kazuki Takenouchi, Kusuo Okuma, Yasuo Takamatsu

研究成果: Chapter in Book/Report/Conference proceedingOther chapter contribution

抄録

To estimate the blade performance of a Darrieus-type cross-flow water turbine, differences between the characteristics of a Darrieus blade which moves along a circular path, and that of the blade at rest in a uniform steady flow are examined quantitatively by use of experimental data for three types of blades with different cambers or chord lengths from each other. It is found that a unique stall character strongly effects the drag force acting on the Darrieus blade. A model of the changing pattern of the drag coefficient by a dynamic stall is proposed from the results of measurement for estimating the blade characteristics. As the results, the blade characteristics and performances of the Darrieus-type runner are predicted well by the use of aerofoil data in a uniform steady flow and taking into account the effect of a circular motion, and the dynamic effect of the unsteady flow around the Darrieus blade.

本文言語英語
ホスト出版物のタイトルMemoirs of the Kyushu University, Faculty of Engineering
出版社Publ by Kyushu Univ
ページ131-144
ページ数14
52
2
出版ステータス出版済み - 6 1992

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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