Synthetic jet actuation for load control

Research output: Contribution to journalConference articleAcademicpeer-review

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Abstract

The reduction of wind turbine blade loads is an important issue in the reduction of the costs of energy production. Reduction of the loads of a non-cyclic nature requires so-called smart rotor control, which involves the application of distributed actuators and sensors to provide fast and local changes in aerodynamic performance. This paper investigates the use of synthetic jets for smart rotor control. Synthetic jets are formed by ingesting low-momentum fluid from the boundary layer along the blade into a cavity and subsequently ejecting this fluid with a higher momentum. We focus on the observed flow phenomena and the ability to use these to obtain the desired changes of the aerodynamic properties of a blade section. To this end, numerical simulations and wind tunnel experiments of synthetic jet actuation on a non-rotating NACA0018 airfoil have been performed. The synthetic jets are long spanwise slits, located close to the trailing edge and directed perpendicularly to the surface of the airfoil. Due to limitations of the present experimental setup in terms of performance of the synthetic jets, the main focus is on the numerical flow simulations. The present results show that high-frequency synthetic jet actuation close to the trailing edge can induce changes in the effective angle of attack up to approximately 2.9°.
Original languageEnglish
Article number012026
JournalJournal of physics: Conference series
Volume555
DOIs
Publication statusPublished - 2014
EventThe Science of Making Torque from Wind, TORQUE 2012 - Oldenburg, Germany
Duration: 9 Oct 201211 Oct 2012

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actuation
trailing edges
airfoils
blades
aerodynamics
rotors
momentum
turbine blades
wind turbines
angle of attack
fluids
wind tunnels
slits
tunnels
boundary layers
simulation
actuators
costs
cavities
sensors

Cite this

@article{87a5859d01564e46bc87e6d143554a33,
title = "Synthetic jet actuation for load control",
abstract = "The reduction of wind turbine blade loads is an important issue in the reduction of the costs of energy production. Reduction of the loads of a non-cyclic nature requires so-called smart rotor control, which involves the application of distributed actuators and sensors to provide fast and local changes in aerodynamic performance. This paper investigates the use of synthetic jets for smart rotor control. Synthetic jets are formed by ingesting low-momentum fluid from the boundary layer along the blade into a cavity and subsequently ejecting this fluid with a higher momentum. We focus on the observed flow phenomena and the ability to use these to obtain the desired changes of the aerodynamic properties of a blade section. To this end, numerical simulations and wind tunnel experiments of synthetic jet actuation on a non-rotating NACA0018 airfoil have been performed. The synthetic jets are long spanwise slits, located close to the trailing edge and directed perpendicularly to the surface of the airfoil. Due to limitations of the present experimental setup in terms of performance of the synthetic jets, the main focus is on the numerical flow simulations. The present results show that high-frequency synthetic jet actuation close to the trailing edge can induce changes in the effective angle of attack up to approximately 2.9°.",
author = "{de Vries}, H. and {van der Weide}, E.T.A. and H.W.M. Hoeijmakers",
year = "2014",
doi = "10.1088/1742-6596/555/1/012026",
language = "English",
volume = "555",
journal = "Journal of physics: Conference series",
issn = "1742-6588",
publisher = "IOP Publishing Ltd.",

}

Synthetic jet actuation for load control. / de Vries, H.; van der Weide, E.T.A.; Hoeijmakers, H.W.M.

In: Journal of physics: Conference series, Vol. 555, 012026, 2014.

Research output: Contribution to journalConference articleAcademicpeer-review

TY - JOUR

T1 - Synthetic jet actuation for load control

AU - de Vries, H.

AU - van der Weide, E.T.A.

AU - Hoeijmakers, H.W.M.

PY - 2014

Y1 - 2014

N2 - The reduction of wind turbine blade loads is an important issue in the reduction of the costs of energy production. Reduction of the loads of a non-cyclic nature requires so-called smart rotor control, which involves the application of distributed actuators and sensors to provide fast and local changes in aerodynamic performance. This paper investigates the use of synthetic jets for smart rotor control. Synthetic jets are formed by ingesting low-momentum fluid from the boundary layer along the blade into a cavity and subsequently ejecting this fluid with a higher momentum. We focus on the observed flow phenomena and the ability to use these to obtain the desired changes of the aerodynamic properties of a blade section. To this end, numerical simulations and wind tunnel experiments of synthetic jet actuation on a non-rotating NACA0018 airfoil have been performed. The synthetic jets are long spanwise slits, located close to the trailing edge and directed perpendicularly to the surface of the airfoil. Due to limitations of the present experimental setup in terms of performance of the synthetic jets, the main focus is on the numerical flow simulations. The present results show that high-frequency synthetic jet actuation close to the trailing edge can induce changes in the effective angle of attack up to approximately 2.9°.

AB - The reduction of wind turbine blade loads is an important issue in the reduction of the costs of energy production. Reduction of the loads of a non-cyclic nature requires so-called smart rotor control, which involves the application of distributed actuators and sensors to provide fast and local changes in aerodynamic performance. This paper investigates the use of synthetic jets for smart rotor control. Synthetic jets are formed by ingesting low-momentum fluid from the boundary layer along the blade into a cavity and subsequently ejecting this fluid with a higher momentum. We focus on the observed flow phenomena and the ability to use these to obtain the desired changes of the aerodynamic properties of a blade section. To this end, numerical simulations and wind tunnel experiments of synthetic jet actuation on a non-rotating NACA0018 airfoil have been performed. The synthetic jets are long spanwise slits, located close to the trailing edge and directed perpendicularly to the surface of the airfoil. Due to limitations of the present experimental setup in terms of performance of the synthetic jets, the main focus is on the numerical flow simulations. The present results show that high-frequency synthetic jet actuation close to the trailing edge can induce changes in the effective angle of attack up to approximately 2.9°.

U2 - 10.1088/1742-6596/555/1/012026

DO - 10.1088/1742-6596/555/1/012026

M3 - Conference article

VL - 555

JO - Journal of physics: Conference series

JF - Journal of physics: Conference series

SN - 1742-6588

M1 - 012026

ER -