Topic
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.
Papers published on a yearly basis
Papers
More filters
••
TL;DR: In this paper, a turbine was constructed and installed above a bluff body and tow tested to determine the gain, and detailed measurements of vehicle speed and turbine power were made, and the resulting power coefficient was used to validate CFD simulation results.
33 citations
••
TL;DR: A global optimization of Savonius blade pair where each pair is composed of two circular arc segments is performed and the novel optimized design achieved 39% improvement of the maximum power coefficient relative to the classical Sav onius design.
32 citations
••
TL;DR: In this paper, wind tunnel experiments have been carried out to optimize the swirling Savonius turbine geometry in terms of maximum power coefficient by considering several design parameters, such as blade overlap ratio, hot air inlet diameter and the condition of the top end plate.
Abstract: It has been suggested that waste heats or naturally available heat sources can be utilized to produce swirling flow by a design similar to that of split channels which is currently used to initiate fire whirls in laboratories. The new design combines the conventional Savonius wind turbine and split channel mechanisms. Previous computational and preliminary experimental works indicate a performance improvement in the new design (named as swirling Savonius turbine) compared to the conventional Savonius design. In this study, wind tunnel experiments have been carried out to optimize the swirling Savonius turbine geometry in terms of maximum power coefficient by considering several design parameters. The results indicate that the blade overlap ratio, hot air inlet diameter and the condition of the top end plate have significant influence on power and torque coefficients, while a larger aspect ratio and closed top end plate have some favourable effects on the performance. The optimum configuration has been tested in four different wind velocities to determine its influence on the performance, and power coefficients were found to be higher in high wind velocities. The performance comparison of optimum configuration with conventional Savonius rotor showed an increase of 24.12% in the coefficient of power.
32 citations
••
TL;DR: In this article, a CFD 2D numerical model was developed and validated against experimental data, obtained in the subsonic wind tunnel owned by the University of Catania, in steady unidirectional condition which is of utmost importance as a first step in the more complex oscillating flow study.
31 citations
•
TL;DR: In this paper, a twisted blade was developed for wind turbine rotors to reduce the negative torque and the self-starting characteristics of a single stacked rotor system while maintaining a high rotational speed.
Abstract: The present investigation is aimed at exploring the feasibility of Savonius wind turbine blades for power generation, which has hitherto been limited to water pumping and grain grinding work. In this project, an attempt has been made to develop a twisted blade for its use in Savonius wind turbine rotors. The objective is to reduce the negative torque and the self-starting characteristics of a single stacked rotor system while maintaining a high rotational speed so that such a rotor system can be used for electricity generation. Tests have been carried out of semicircular (curved) and twisted blades both in a three bladed rotor system. Aerodynamic performance of these blades have been evaluated in a low speed wind tunnel on the basis of starting torque, power output and rotational speed at various setting angles and gap widths. Experimental investigation shows the potential of the twisted bladed rotor in terms of smooth running, higher coefficient of performance and self-starting capability as compared to that of the semicircular bladed rotor.
30 citations