Wind Tunnel Testing for a New Experimental Model of Counter-rotating Wind Turbine

Mitulet, Lucia-Andreea; Oprina, Gabriela; Chihaia, Rareş-Andrei; Nicolaie, Sergiu; Nedelcu, Adrian; Popescu, Mihail

doi:10.1016/j.proeng.2015.01.477

Cited by 25 publications

(22 citation statements)

References 3 publications

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“…It is a system of dual rotors which rotate in opposite directions to one another. One of the rotors rotates in a clockwise direction and the other in a counter-clockwise direction [17]. In the last few years, the investigation of the CRWT has been thoroughly approached both numerically and experimentally.…”

Section: Introductionmentioning

confidence: 99%

Simulation Study on the Performance of a Counter-rotating Savonius Vertical Axis Wind Turbine

Didane¹,

Anuar²,

Batcha³

et al. 2020

CFDL

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Wind power is an energy source that is becoming an alternative to burning fossil fuels that may harm the environment during operations due to the emission of harmful gases. In this study, simulation and performance investigations of a counter-rotating vertical axis wind turbine (VAWT) based on the Savonius S-type rotor have been analysed through a computational simulation approach. The foremost motive of this study is to widen the operating wind speed range of the counter-rotating concept in a VAWT while enhancing the conversion efficiency of a single-rotor VAWT system. The 3D simulations were performed based on the K-omega shear stress transport (SST) turbulence model. The results have shown that the counter-rotating model possesses better performance characteristics in terms of torque, power and their corresponding coefficients compared to a single-rotor design of a wind turbine. A maximum output of more than two times was obtained from the new CRWT system compared to that of a single-rotor wind turbine (SRWT). Moreover, the output of the top rotor was higher than the bottom rotor due to the increased higher rotational speed of the top rotor.

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Section: Introductionmentioning

confidence: 99%

Simulation Study on the Performance of a Counter-rotating Savonius Vertical Axis Wind Turbine

Didane¹,

Anuar²,

Batcha³

et al. 2020

CFDL

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“…The former includes wind tunnel testing (see e.g. [6,7]) as well as field test, for example [8] or study of 6 kW CRWT carried out over a period of 4 month [9]. The later are mainly performed with use of Computational Fluids Dynamics (CFD).…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation on the performance of a small counter-rotating wind turbine

2019

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The article presents results of the investigation on the performance of a small counter-rotating wind turbine. Wind turbine has been simulated using Computational Fluid Dynamics methods. Actuator Line Model has been successfully used to represent rotors in computational domain. Parametric study has been carried out, taking into account changes in the tip speed ratio of the rotors while maintaining a constant distance between upwind and downwind rotor. Study results revealed noticeable increase in power coefficient for optimal configuration. Dynamic interaction between rotors has been investigated exposing no significant interference in both torque and power.

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“…Such an approach, studied e.g. in [10] or [11], due to higher relative rotational speed can help to reduce generator size or volume of magnetic materials used. More comprehensive review of CRWT configuration and conducted investigations is provided in [12].…”

Section: Introductionmentioning

confidence: 99%

Study on the Influence of an Axial Distance Between Rotors on a Performance of a Small Counter-Rotating Wind Turbine

Pacholczyk¹,

Blecharz²,

Karkosiński³

2019

Proceedings of the 5th World Congress on New Technologies

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In this paper, results of the investigation on the performance of a small counter-rotating wind turbine has been presented. Computational Fluid Dynamics methods have been used for wind turbine simulations. Rotors representation were introduced into computational domain by means of Actuator Line Model. Influence of an axial distance of CRWT rotors has been investigated. In all studied configurations rotors were counter-rotating with exactly the same rotational speed. Results of a study revealed noticeable increase in power coefficient for optimal configuration. Dynamic interaction between rotors has been investigated exposing significant interference in both torque and power in part of considered cases. Reasonable rotors distances, as well as rotors placements on tower's sides have been proposed. Used calculation method has been found to be appropriate for counter-rotating wind turbine simulation.

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Wind Tunnel Testing for a New Experimental Model of Counter-rotating Wind Turbine

Cited by 25 publications

References 3 publications

Simulation Study on the Performance of a Counter-rotating Savonius Vertical Axis Wind Turbine

Simulation Study on the Performance of a Counter-rotating Savonius Vertical Axis Wind Turbine

Numerical investigation on the performance of a small counter-rotating wind turbine

Study on the Influence of an Axial Distance Between Rotors on a Performance of a Small Counter-Rotating Wind Turbine

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