Influence of concave guide vane at different tilt angles on savonius wind turbine performance

الملخص EN

this work numerically studied the influence of tilt angle in concave guide vane to increase Savonius rotor performance.

Guide vane is one of additional device that its function is for directing wind stream onto concave blade and deserves as obstacle of the wind that flowing onto convex blade.

That way increased wind speeds to the rotor, consequently it produced higher power coefficient and the Savonius rotor performed better performance.

four designs of guide vane were arranged in this study.

The design of guide vane at tilt angle 40°,50°, 60° and 70° The result concluded that tilt angle in guide vane affects the performance of Savonius rotor.

The power that generated by the rotor with guide vanes at 50° increase significantly compared with Savonius rotor without guide vane.

The maximum power coefficient improvement was attained up to 78.2%.