Abstract
The report represents the relations among the plane shape of horizontal shaft wind turbine blade, the characteristics of wind turbine and the velocity distributions around the wind turbine. The power coefficient, torque coefficient and rotation of the wind turbine rotor are measured in the wind tunnel test. Also, the velocity distributions around the turbine are measured by means of three hot wires. The flow visualization of boundary layer on the rotating blade is carried out by the surface tuft method. Three kinds of blades used in the experiment correspond to taper, equi-chord and reversed-taper blades. All the blades are twisted under almost optimum condition. From the above results, many interesting facts are solved.
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