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, the Savonius wind turbine bears unique features in both aspects of rotor structure and torque production, and a review of the relevant studies can be found in Section 2.1.
Abstract: The Savonius wind turbine bears unique features in both aspects of rotor structure and torque production. Continual improvement of the Savonius wind turbine motivates the authors of this review to gather, classify and discuss the quintessential parts of the relevant studies. Unambiguous priority is granted to the turbulent flow surrounding the Savonius wind rotor. Flow patterns near the Savonius wind rotor are represented with distributions of static pressure near conventional and spiral Savonius wind rotors. Assorted geometric shapes of Savonius wind rotors are demonstrated to illuminate a panorama of the development of the Savonius wind rotor, as well as to highlight the connection between rotor-based solid boundary and flow structures near Savonius wind rotor blades. Limitations of existing analytical methods used to predict the performance of the Savonius wind rotor are interpreted. Advantages of both numerical and experimental techniques in acquiring aerodynamics forces, shaft torque and internal stress distribution for the Savonius wind rotor blade are enumerated, and the difficulties incurred by curved blades and the rotation of the rotor are analyzed as well. Optimal values of tip-speed ratio corresponding to maximum power coefficient or maximum torque coefficient are different for various geometric shapes of Savonius wind rotors, which sheds new light upon the relationship between flow characteristics and performance parameters associated with the Savonius wind rotor.
47 citations
TL;DR: The blade profiles and blade shapes of vertical-axis Savonius wind turbine rotors have undergone a series of changes over the past three decades as mentioned in this paper, and there is not a single piece of literature that gives a comprehensive and a systematic review of rotor blade profile and shape.
Abstract: The blade profiles and blade shapes of vertical-axis Savonius wind turbine rotors have undergone a series of changes over the past three decades. Wind turbine aerodynamicists have carried out numerous computational and experimental research to arrive at a suitable rotor blade design configuration so as to harvest maximum energy from the available wind. In most of the studies, the geometric and aerodynamic aspects of the rotor blade design have been reported. Interestingly enough, a couple of review papers got published in the area of Savonius rotors during the last one decade. However, there is not a single piece of literature that gives a comprehensive and a systematic review of Savonius rotor blade profiles and shapes. This paper aims to collate all the research findings related to these blade profiles/shapes and makes an attempt to highlight their features together with future recommendations.
46 citations
TL;DR: A metamodel-based method to optimize the size and shape of a set of deflector plates to reduce the reverse moment of the turbine, using a genetic algorithm combined with an artificial neural network, reducing the computational cost.
46 citations
TL;DR: In this article, the aerodynamic performance of a helical Savonius rotor model with 180° twisted blades is investigated numerically and experimentally using the Finite Volumes Method performed by the solution of the Reynolds Averaged Navier-Stokes (RANS).
45 citations
TL;DR: In this paper, a 2D parametric optimization process was followed, where several design parameters pertaining to the turbine's geometry were assigned and optimized, and the optimized casing dimensions were extracted and used to carry out 3D numerical investigations.
44 citations