Experimental Considerations in an Approximate Method for Estimating the Blade Performance of Darrieus-Type Cross-Flow Water Turbines

Yasuo Takamatsu, Akinori Furukawa, Kazuki Takenouchi, Kusuo Ōkuma

研究成果: ジャーナルへの寄稿記事

1 引用 (Scopus)

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 Durrieus 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 result, 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 circling motion, and the dynamic effect of the unsteady flow around the Darrieus blade.

元の言語英語
ページ(範囲)3110-3116
ページ数7
ジャーナルTransactions of the Japan Society of Mechanical Engineers Series B
57
発行部数541
DOI
出版物ステータス出版済み - 1 1 1991
外部発表Yes

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cross flow
turbines
Steady flow
blades
Turbomachine blades
Turbines
estimating
Cambers
Drag coefficient
Unsteady flow
Airfoils
water
Drag
Water
steady flow
camber
drag coefficients
unsteady flow
drag
estimates

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering

これを引用

Experimental Considerations in an Approximate Method for Estimating the Blade Performance of Darrieus-Type Cross-Flow Water Turbines. / Takamatsu, Yasuo; Furukawa, Akinori; Takenouchi, Kazuki; Ōkuma, Kusuo.

:: Transactions of the Japan Society of Mechanical Engineers Series B, 巻 57, 番号 541, 01.01.1991, p. 3110-3116.

研究成果: ジャーナルへの寄稿記事

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abstract = "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 Durrieus 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 result, 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 circling motion, and the dynamic effect of the unsteady flow around the Darrieus blade.",
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AB - 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 Durrieus 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 result, 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 circling motion, and the dynamic effect of the unsteady flow around the Darrieus blade.

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