ステップ風に対するS字型風車の数値シミュレーション(エネルギー変換・流体機械,一般講演)

概要

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When the wind turbine rotates by fixed angular velocity of the rotor, the wind of large speed change causes damage of the blade of the wind turbine. Numerical simulation is carried out for the S-shaped wind turbine in wind of large speed change. The rotating coordinate system is employed so that the boundary conditions on the blades of the rotor become simple. In order to impose the boundary conditions on the blades precisely, the boundary fitted coordinate system is employed. Fractional step method is used to solve the basic incompressible equations. The rotating S-shaped wind turbine in wind of large speed change is proposed and its performance is examined. The variation of the torque becomes large when the turbine rotates quickly in wind of low speed or when it rotates slowly in wind of high speed. Moreover the flow fields around rotating S-shaped wind turbine are visualized.
日本流体力学会の論文
2007-08-06