experimental investigation on a ducted savonius vertical axis wind turbine and its performance comparison with and without end-plates

As the energy demand is growing and fossil fuel-based energy resources are getting depleted, there has been an increased focus on the use of renewable energy resources. wind energy is a highly suitable energy resource that can be harvested for this purpose. this research work deals with the design and fabrication of novel designs as a mean to harness wind energy using a ‘savonius’ turbine. it is generally employed to harvest the low to very low wind speed potentials. this paper introduces a novel concept about a ducted savonius wind turbine, where power generation can increase more than 10 folds. the paper provides experimental validation of the effect of using a converging ducted structure with single-stage and double-stage configurations of a savonius wind turbine. the paper also compares the turbine’s performance with and without end-plates and compares single-stage and double-stage turbines. the experimental results obtained show around 15% increase in the tangential blade velocity in a single-stage rotor when endplates are used. the results of the study prove that power coefficient increases with the addition of a converging ducted structure with the savonius wind turbine, and also with the use of end-plates.