抄録
Some wind collectors for the Darrieus-type wind turbine were tried numerically by 3-D LES(Large Eddy Simulation) analysis. The aim of this study is improvement of power coefficient. The main parameters of wind collector are curvature of foil and its width. Another important parameter is foil setting angle. The rotor is constructed by 3 or 2 blades (chord length are 15% of diameter). The equations are discretized by Finite volume method for space and Fractional step method for time. As a result of analysis, The best setting position was the 25degree upwind the axis. The wind collector was effective to 2 blades rotor than 3blades rotor, its maximum power coefficient was 0.452.
