Review of the Savonius rotor's blade profile and its performance

Chen, Liu; Chen, Jian; Zhang, Zhouzhou

doi:10.1063/1.5012024

Cited by 45 publications

(20 citation statements)

References 57 publications

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“…On the other hand, the Savonius rotor is a drag type rotor, which mostly operates through the action of drag forces. The literature on Savonius rotors has been reviewed by Chen et al [47]. Furthermore, a very comprehensive review of the timeline of Darrieus VAWT development can be found in the recent work by Tjiu et al [48,49].…”

Section: Vertical Axis Wind Turbinesmentioning

confidence: 99%

A Review of Urban Wind Energy Research: Aerodynamics and Other Challenges

Micaleff

Bussel

2018

Energies

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Urban wind energy research is crucial for the success or failure of wind turbines installed in the built environment. Research in this field is fragmented into various research groups working on different topics in isolation with seemingly few efforts of integrating the various fields. This review aims at highlighting the synergies between the various advances, particularly in aerodynamics, but also in other areas. Past and current work has been focused on establishing reliable wind statistics at the site of interest. Advances in building aerodynamics have provided new insight on the local flow occurring at the rotor location. An outlook toward future research and the need to treat the different flow scales in a holistic manner is emphasized given also the recent advances in rotor aerodynamics related to the effect of flow skewness and turbulence. This will shed light on the critical issues that need to be addressed by scientists in order to make urban wind energy viable for decentralized generation. Various other present challenges are discussed briefly including structural aspects, noise emissions, economics and visual impact. Research in this field should be the guidepost for more targeted certification standards, in an effort to regularize the small wind energy market.

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Section: Vertical Axis Wind Turbinesmentioning

confidence: 99%

A Review of Urban Wind Energy Research: Aerodynamics and Other Challenges

Micaleff

Bussel

2018

Energies

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“…The geometry of the conventional Savonius rotor is featured by S-shaped cross sections. Thus far, the rotor geometry has been improved based on the conventional Savonius rotor [23]. For instance, the Savonius rotor with twisted blades has been proved to be more adaptable to wind directions compared to the conventional one.…”

Section: Fundamental Flow Characteristics Of the Savonius Rotormentioning

confidence: 99%

Upstream Flow Control for the Savonius Rotor under Various Operation Conditions

et al. 2018

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Applications of the Savonius rotor have been extended in recent years, necessitating an in-depth investigation on flow characteristics of such a fluid energy converting device. For the wake flow downstream of the Savonius rotor, studies have been reported extensively. Nevertheless, literature specifically devoted to the upstream flow of the Savonius rotor can rarely be found. This review collects and compiles findings from relevant studies to prove the significance of upstream flow patterns to the operation of the Savonius rotor. Then attempts from experimental and numerical aspects to substantiate the important effect of the upstream flow are implemented. Based on practical cases and laboratory works, upstream flow patterns for the Savonius rotor are divided into four types, namely uniform flow, guided flow, rotor wake flow and oscillating flow. Accordingly, conditions under which these upstream flow patterns arise are analyzed respectively. Experimental and numerical results are presented to clarify the influential factors underlying diverse upstream flow patterns. Furthermore, the relationship between the performance of the Savonius and the upstream flow is elucidated, facilitating the development of techniques of controlling the upstream flow. This review provides a systematic reference for the control of the upstream flow for the Savonius rotor, which has the tendency of developing into an independent technical branch.

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“…6 Akwa et al's review article 7 shows the effect of end plates, aspect ratio, bucket spacing, overlap ratio and bucket and rotor shapes on the performance of Savonius turbine. Chen et al's 8 review article summarize blade profile changes for Savonius wind turbines. Sheldahl et al 9 studied classical Savonius rotor experimentally and found the performance of Savonius turbine by changing the bucket number and modifying overlap ratio in a low speed wind tunnel.…”

Section: Introductionmentioning

confidence: 99%

Performance enhancement of Savonius wind turbine by blade shape and twisted angle modifications

Elmekawy

Saeed

Kassab

2021

Proceedings of the Institution of Mechanical Engineers, Part A:

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Three-dimensional CFD simulations are carried out to study the increase of power generated from Savonius vertical axis wind turbines by modifying the blade shape and blade angel of twist. Twisting angle of the classical blade are varied and several proposed novel blade shapes are introduced to enhance the performance of the wind turbine. CFD simulations have been performed using sliding mesh technique of ANSYS software. Four turbulence models; realizable k -[Formula: see text], standard k - [Formula: see text], SST transition and SST k -[Formula: see text] are utilized in the simulations. The blade twisting angle has been modified for the proposed dimensions and wind speed. The introduced novel blade increased the power generated compared to the classical shapes. The two proposed novel blades achieved better power coefficients. One of the proposed models achieved an increase of 31% and the other one achieved 32.2% when compared to the classical rotor shape. The optimum twist angel for the two proposed models achieved 5.66% and 5.69% when compared with zero angle of twist.

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Review of the Savonius rotor's blade profile and its performance

Cited by 45 publications

References 57 publications

A Review of Urban Wind Energy Research: Aerodynamics and Other Challenges

A Review of Urban Wind Energy Research: Aerodynamics and Other Challenges

Upstream Flow Control for the Savonius Rotor under Various Operation Conditions

Performance enhancement of Savonius wind turbine by blade shape and twisted angle modifications

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