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.
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TL;DR: In this paper, computational fluid dynamics (CFD) is employed to evaluate the influence of surrounding buildings on the performance of a roof-mounted, 2-bladed Savonius vertical-axis wind turbine (VAWT).
20 citations
TL;DR: In this article, an airfoil-shaped deflector was proposed and placed in front of the turbine to prevent the negative torque affecting the convex surface of the returning blade and also making it possible for deflecting the wind into the advancing blade.
Abstract: In the present study, a novel deflector system was proposed to improve the performance of a Savonius wind turbine through Computational Fluid Dynamics (CFD) simulation. For this purpose, an airfoil-shaped deflector was proposed and placed in front of the turbine to prevent the negative torque affecting the convex surface of the returning blade and also making it possible for deflecting the wind into the advancing blade. Different configurations of the proposed deflector system were considered numerically using the CFD solver. A three-dimensional incompressible unsteady Reynolds-averaged Navier–Stokes simulation in conjunction with the SST k − ω turbulence model was done and validated with the available experimental data. The predicted results indicated that the performance of the Savonius rotor is highly dependent on the position and angle of the deflector. Thus, there was an appropriate position and angle values to obtain the highest torque and power coefficients. It was concluded that using the favorable airfoil-shaped deflector significantly enhanced the static torque coefficient values in all angular ranges especially in the rotation angles between 0°–30° and 150°–180°. By properly covering the returning blade using the airfoil-shaped deflector, the static torque coefficient values increased up to two times higher than that generated by without deflector case.
20 citations
TL;DR: A study into the utilization of Bézier curves and transient computational fluid dynamics (CFD) to optimize the conventional Savonius blade design and proves the effectiveness of the innovative geometry by improved pressure and velocity distributions around blades of novel design.
Abstract: Advanced wind turbine designs and technologies have been evolved to take advantage of wind energy Despite the significant progress already attained, the need for a dependable wind energy converter
20 citations
20 citations
TL;DR: In this paper, a modified Savonius rotor with double-curved two-stage buckets was evaluated using 3D flow predictions executed in ANSYS-FLUENT and different types of nozzles were added after observing acceptable agreement between empirical and simulation results.
19 citations