Modeling of Savonius Hydro Turbine: An Experimental Approach

Abstract

The aim of present work is to illustrate the performance of savonius hydro turbine. It is a drag type device consisting of two or more scoops. The differential drag causes the savonius turbine to rotate and generate the power. Hydrokinetic turbine has gained keen interest in developing power and improves performance because of the unique properties of water such as higher specific weight, higher momentum than air for the same velocity. From literature review it is concluded that, most of study is done related to application of savonius turbine as wind turbine application, however very little work is observed for application of savonius turbine as a hydrodynamic field. So, it is decided to enhance performance of turbine for hydrodynamic application.
CFD code analyzed the flow behavior of the Savonius hydro turbine with the help of fluent in this work by varying the overlap ratio simulation was carried away. The overlap ratio was taken in the range of 5,10,15,20,25,30 and each simulation taken with different TSR and obtained a feasible position of the turbine to maximize the co-efficient of performance of the hydro turbine. turbine and through this work by considering all parameters experimentally and with the help of numerical simulation able to get a feasible model with maximum Cp.