Performance Analysis of a Water Savonius Rotor: Effect of the Internal Overlap

Ibrahim Mabrouki¹, Zied Driss^1, and Mohamed Salah Abid¹

¹Laboratory of Electro-Mechanic Systems (LASEM), National School of Engineers of Sfax (ENIS), University of Sfax, B.P. 1173, Road Soukra km 3.5, 3038 Sfax, TUNISIA

Cite this paper:
Ibrahim Mabrouki, Zied Driss and Mohamed Salah Abid. Performance Analysis of a Water Savonius Rotor: Effect of the Internal Overlap. Sustainable Energy. 2014; 2(4):121-125. doi: 10.12691/rse-2-4-1

Abstract

The water Savonius rotor is classified as a vertical axis water rotor like the Darrieus, Gyromill or H-rotor. The advancing blade with concave side facing the water flow would experience more drag force than the returning blade, thus forcing the rotor to rotate. In this work, we are interested on the study of the of the internal overlap effect of a water Savonius rotor. The experimental results is developed using a hydraulic test bench. The test bench consists on an intake, a control gate, a penstock, a canalization, a test section, an outflow and a pump. A detailed description of the global characteristics is presented such as power, dynamic torque, power and its coefficients.

Keywords:
Savonius rotor internal overlap hydraulic test bench power coefficient torque coefficient

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