1826 小型直線翼垂直軸型風車の翼性能に関する実験的研究 : 有限幅を有する円弧翼の性能(S17-2 風力発電(2),21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

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The aerodynamic characteristics of a circular arc wing with finite span and flow field around the wing have been investigated by the wall static pressure measurement on the wing surface. In comparison of pressure distribution near the wing tip and the center of the wing span, the lift force near the wing tip is reduced due to the wing tip at angle of attack of α=4°. This is resulted by the fact that pressure difference between suction side and pressure side at the wing tip is significantly reduced due to influence of the wing tip. Otherwise, at α=12° the lift force near the wing tip is kept to be as large as that at the center of the wing span. This is resulted by the fact that pressure difference between suction side and pressure side is smaller than that at the center of the wing span except near leading edge, but suction side pressure is considerably reduced near the leading edge due to influence of the wing tip. Consequently, the lift force near wing tip is kept to be the same level of that the center of the wing span at α=12°.
2008-08-02