A comparative calculation of the wind turbines capacities on the basis of the L–σ criterion

Menet, Jean-Luc; Valdès, Laurent-Charles; Ménart, Bruno

doi:10.1016/s0960-1481(00)00114-2

Cited by 33 publications

(15 citation statements)

References 5 publications

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“…Menet et al (2001) have reported that VAWT has a very high potential for further improvement. It also offers good resistance to extreme climatic conditions such as heavy rains, strong sunshine, etc.…”

Section: Equipmentmentioning

confidence: 99%

“…The wind turbines were supported by small pipes in order to retain the shape and mechanical breaks were provided in order to stop the revolving wind turbine in case of strong winds. Menet et al (2001) have reported that VAWT has a very high potential for further improvement. Using a specific comparison method, the L-criterion, they have shown that despite its poor efficiency, the drag-based VAWTs are more resistant to mechanical stresses than all fast running wind turbines.…”

Section: Equipmentmentioning

confidence: 99%

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Optimisation of vertical axis wind turbine: CFD simulations and experimental measurements

Ghatage

Joshi

2011

Can J Chem Eng

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A system for the conversion of kinetic energy of wind into thermal energy has been developed which can replace relatively expensive electromechanical equipment. The system consists of a vertical axis wind turbine (VAWT) which is coupled with the shaft of a stirred vessel. In the present work, computational fluid dynamic (CFD) simulations have been performed for the flow generated in a stirred tank with disc turbine (DT). The predicted values of the mean axial, radial and tangential velocities along with the turbulent kinetic energy have been compared with those measured by laser Doppler anemometry (LDA). Good agreement was found between the CFD simulations and experimental results. Such a validated model was employed for the optimisation of drag-based VAWT. An attempt has been made to increase the efficiency of turbine by optimising the shape and the number of blades. For this purpose, the combination of CFD and experiments has been used. The flows generated in a stirred tank and that generated by a wind turbine were simulated using commercial CFD software Fluent 6.2. A comparison has been made between the different configurations of wind turbines. Results show that a provision in blade twist enhances the efficiency of wind turbine. Also, a wind turbine with two blades has higher efficiency than the turbine with three blades. Based on the detailed CFD simulations, it is proposed that two bladed turbine with 30 • twist shows maximum efficiency.

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Section: Equipmentmentioning

confidence: 99%

Section: Equipmentmentioning

confidence: 99%

Optimisation of vertical axis wind turbine: CFD simulations and experimental measurements

Ghatage

Joshi

2011

Can J Chem Eng

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“…The wind turbine has low running speed and noise. The Savonius rotor is self-starting, with relatively high power per unit length, and can operate in all wind directions (Menet et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Effect of barchan dune guide blades on the performance of a lotus-shaped micro-wind turbine

Wang

Zhan

2015

Journal of Wind Engineering and Industrial Aerodynamics

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“…For example, it has been shown in several studies that its performance is independent of the Reynolds number of the air stream [4,5]. The L-sigma criterion [6], which considers the frontal area of a turbine and the mechanical stresses during operation, identified the Savonius VAWT as advantageous over other types of turbines (including HAWTs). It was also reported to have better start-up capabilities and lower tip-speed-ratios (l).…”

Section: Introductionmentioning

confidence: 99%

Multiple streamtube approximation of flow-induced forces on a Savonius wind turbine

Pope

Naterer

2012

Int. J. Energy Res.

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This paper develops a new approximate model to predict the pressure and momentum forces on a Savonius‐style vertical axis wind turbine. Flow distributions through and around the turbine are examined for analytical predictions of the torque and power output, at all rotor angles. A new approximate streamtube method is developed to predict the momentum, lift, and drag forces on the rotor surfaces by the air stream on the basis of an integral force balance on the turbine blades. Unlike other past analytical methods, the technique predicts both momentum and pressure forces imposed on the rotor surface during operation. The calculated results are validated against experimental data and numerical predictions from computational fluid dynamics. Copyright © 2012 John Wiley & Sons, Ltd.

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A comparative calculation of the wind turbines capacities on the basis of the L–σ criterion

Cited by 33 publications

References 5 publications

Optimisation of vertical axis wind turbine: CFD simulations and experimental measurements

Optimisation of vertical axis wind turbine: CFD simulations and experimental measurements

Effect of barchan dune guide blades on the performance of a lotus-shaped micro-wind turbine

Multiple streamtube approximation of flow-induced forces on a Savonius wind turbine

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