Active and passive circulation control as enhancement techniques of wind turbines performance

Dumitrache, Al.; Frunzulică, Florin; Dumitrescu, Horia; Mahu, Razvan

doi:10.1063/1.4765509

Cited by 2 publications

(2 citation statements)

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“…Circulation control using Coanda effect has been investigated for a great variety of field from helicopter blades to propellers, showing the great interest of the research community in such techniques [14]. However, circulation control using Coanda has only recently been investigated in the field of wind turbine aerodynamics [15,16,17,18,19]. Cagle and Jones [20] and Jones et al [21] provided experimental feasability evidence of CC on wing profiles similar to the one used on wind turbines but only gave steady-state information on the system.…”

Section: Introductionmentioning

confidence: 99%

Experiments on lift dynamics and feedback control of a wind turbine blade section

Jaunet

Braud

2018

Renewable Energy

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An experimental campaign is performed to the study of feedback lift control applied to a wind turbine blade. A 5-digit NACA profile whose trailing edge is rounded for circulation control purposes is used in combination with fluidic actuation. It is first shown in this article how the modified profile performs, in terms of aerodynamic forces, in both natural and manipulated cases. Then, the dynamics of controlled pressure (and thus lift) establishment is identified. A discussion is given on the speed of lift dynamics in comparison with previous studies and on its ability to overcome lift perturbations due to external perturbations. Finally, a feedback lift control experiment is performed showing the feasibility of such control in a wind turbine environment.

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Section: Introductionmentioning

confidence: 99%

Experiments on lift dynamics and feedback control of a wind turbine blade section

Jaunet

Braud

2018

Renewable Energy

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“…In the design of a new wind turbine today we have to use the latest aerospace engineering technology, including aerodynamics, lightweight materials (like a composite) and highly efficient aerodynamics (airfoils specially designed for the wind turbines, including circulation control technique) [23]. The concepts of circulation control through trailing edge blowing (Coanda jet) will be taken into account.…”

Section: Blowing Jet Applied To the Wind Turbine Bladementioning

confidence: 99%

Blowing jets as a circulation flow control to enhancement the lift of wing or generated power of wind turbine

Dumiţrache¹,

Frunzulică²,

Dumitrescu³

et al. 2014

INCAS BULLETIN

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The goal of this paper is to provide a numerical flow analysis based on RANS equations in two directions: the study of augmented high-lift system for a cross-section airfoil of a wing up to transonic regime and the circulation control implemented by tangentially blowing jet over a highly curved surface due to Coanda effect on a rotor blade for a wind turbine. This study were analyzed the performance, sensitivities and limitations of the circulation control method based on blowing jet for a fixed wing as well as for a rotating wing. Directions of future research are identified and discussed.

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Active and passive circulation control as enhancement techniques of wind turbines performance

Cited by 2 publications

References 0 publications

Experiments on lift dynamics and feedback control of a wind turbine blade section

Experiments on lift dynamics and feedback control of a wind turbine blade section

Blowing jets as a circulation flow control to enhancement the lift of wing or generated power of wind turbine

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