Savonius wind turbine

About: Savonius wind turbine is a research topic. Over the lifetime, 333 publications have been published within this topic receiving 6521 citations.

Study of the flow three-dimensional and instationary in a rotor of the Savonius wind turbine

Abstract: The purpose of this study is to develop a computational code for solving the equations governing the flow of fluids in a vertical axis wind turbine. In order to check the effectiveness of our code, we made an application on the Savonius rotor. The equations that define the flow of fluids in a rotating wheel are that of continuity, Navier-Stokes and energy. These equations are solved numerically by the explicit Lax-Wendroff finite difference method followed by the addition of a time-corrected artificial viscosity. The precision in the space and in the time of our scheme is second order and the stability of the numerical computation is ensured by the CFL condition which imposes a constrain on the time step. The results are presented by pressure and Mach curves.

Numerical study of flow through a Savonius wind turbine

Abstract: The main objective is intended to be the numerical investigation to determine the structure of the real flow in a fixed Savonius wind turbine. A secondary objective of this numerical study will be to obtain the aerodynamic performance of studied wind turbine and also information about velocity field around the rotor.

Characteristics of the Savonius Wind Turbine Using Multiple Guide Vanes

Abstract: This paper aims at identifying the characteristics of the Savonius Wind Turbine using a guide vane, which functions as the steering mechanism and reduces the negative torsion on the returning blade. The addition of the guide vane did not influence the turbine’s capacity in receiving wind direction. The number of guide vanes varied from 4, 8, and 16 with an angle of 45°. The testing was conducted in a wind tunnel at the wind speeds of 4 m/s, 5 m/s and 6 m/s. The turbine with the additional 16 guide vanes gave the best result. The static torsion increased by 84%, dynamic torsion increased by 57%, and the coefficient of power increased by 58% at the speed of 4 m/s.

Study of Multiple Half Blades Effect on the Performance of Savonius Rotor: Experimental Study and Artificial Neural Network (ANN) Model

Abstract: Objectives: To estimate and compare the performance in terms of torque and mechanical power of a new configuration of Savonius rotors with the conventional one. Methods/Statistical Analysis: New configuration comprises multiple half blades added to conventional configuration. Two different new configurations with different half blade geometries and locations were designed. The torque and mechanical power of the rotor was measured experimentally at various wind speeds and rotor positions. The tests were done 4-6 times for each measurement and the results were averaged. Moreover, the measured data were predicted using Artificial Neural Network (ANN). Findings: The location of half blades effect the performance of the rotor. Additionally, both new configurations of Savonius rotors are associated with above 45% increase in mechanical power compared to the conventional Savonius wind turbine. Based on the simulated results, it is found that the R2 value within a range of 0.902-0.99, which indicated a very good fit of the measured data with the calculated data. Application/Improvements: ANN technique can be applied as a powerful tool and effective way in predicting and assessing the performance of the rotor (torque and mechanical power). Keywords: ANN, Experimental Study, Multiple Half Blades, Performance, Savonius Rotor