Airfoil performance on dynamic stall condition
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概要
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The airfoils for the horizontal axis wind turbine operated in the wide attack angle range with dynamic change due to the wind speed variation and yaw miss alignment. These attack angle changes are large in the inboard part of the rotor blade.However most of airfoils are evaluated by the wind tunnel test or the CFD calculations in the static state where the attack angle is fixed. In this study, the dynamic state performances of the airfoils are evaluated by the wind tunnel measurements. The pressure distribution measurements in the dynamic state are performed for three kinds of airfoil. The airfoil performances for both static and dynamic state are shown and the relation between both states are discussed. The hysteresis loop in lift coefficient to attack angle curve depends on the maximum value of attack angle variation. The stall characteristics for the dynamic state depend on the static stall characteristics.
- 一般社団法人 日本風力エネルギー学会の論文
一般社団法人 日本風力エネルギー学会 | 論文
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