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Performances of Savonius Rotor with Addition Guide Vane

This paper aims to improve the performance of Savonius rotor with the addition of guide vane. Guide vane with angle of 45° against tangent is placed around the rotor with the aim of reducing the negative torque to the returning blade. Guide vane is used with varying amounts of 4, 8 and 16. The analysis was conducted by simulation using Computational Fluid Dynamic (CFD) and experiment. The performances of Savonius rotor with guide vane was up to 33% higher than without guide vane.