511 風車用翼型の性能に及ぼす最大厚み位置の影響(環境とエネルギー)

概要

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In this study, the power coefficient was calculated by the blade element-momentum theory for the purpose of bringing out the influence of the maximum thickness position on airfoil characteristics for wind turbine, referring MEL series airfoil data. The power coefficient have different property between Re=1×10^5 and (5.0, 10.0)×10^5. The x_t/C=0.30 case becomes lower attack angle at Re=1×10^5 and every attack angle except (x_t/C=0.30, Re=10×10^5) case stay virtually constant at Re=(5.0, 10.0)×10^5, about the range of attack angle at which the power coefficient exceeds zero. As the maximum thickness position moves forward front, the maximum power coefficient decreases at Re=1×10^5 and increases at Re=(1.0, 5.0)×10^5. Two local maximums of the power coefficient exist with x_t/C=0.42, 0.36 at Re=(5.0, 10.0)×10^5.
一般社団法人日本機械学会の論文
2006-09-14