ヨー状態たおけるフィールド風車回転翼面上の圧力分布(流体工学,流体機械)

概要

論文の詳細を見る
This paper shows the pressure distribution at 50% radial section on a rotor blade of 10m diameter wind turbine in yawed operation. The pressure sensors were mounted on the blabe, and the local inflow angle and local dynamic pressure were measured with the use of five hole Pitot tubes at 1 chord length upwind of the blade leading edge. With the use of measured pressure distribution on the blade, the blade performances were calculated on the basis of the blade coordinate. As results of the measurements, the normal force coefficient in yawed condition decreases compared to those for non-yawed condition. Even if local angle of attack and the relative inflow velocity are the same condition, pressure distribution shows differences due to local slip angle. The tuffs flow-visualization on the rotating blade was carried out by setting the video camera on the rotating system. By the observation of tuffs behavior, the reduction of normal force coefficient is mainly caused by the separation.
2005-02-25