Suppresing Vortex Induced Vibrations of Wind Turbine blades with flaps

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Abstract

The present paper describes an exploratory work aiming to analyze the impact oftrailing edge flaps activation on Vortex Induced Vibrations (VIV) suppression. A computationalstudy of the VIV of the AVATAR rotor blade, a 10MW design suitable for offshore locations,was performed. A Fluid Structure Interaction (FSI) approach was adopted for the simulations,coupling an Improved Delayed Detached Eddy Simulations (IDDES) flow solver with a beam-based structural model. Initial simulations based on the clean geometry identified significantedgewise VIV for certain free stream velocity and flow inclination angles. The inflow conditionsshowing the maximum amplitude of blade vibrations were used in order to test several trailingedge flap geometries and operating angles. The best flap configuration found in that parametricstudy managed to suppress the VIV phenomenon. However, when assessing a wider range ofinflow conditions, the amplitudes of vibration of the blade equipped with flaps were found tobe equivalent to the ones obtained for its clean counterpart. It is therefore concluded that are-calibration of the flap operating angle should be required in order to adapt it to the consideredwind speed and wind direction.
Original languageEnglish
Title of host publicationProceedings of the 7th European Conference on Computational Fluid Dynamics (ECFD 7)
Number of pages12
PublisherEuropean Community on Computational Methods in Applied Sciences
Publication date2018
Publication statusPublished - 2018
Event7th European Conference on Computational Fluid Dynamics (ECFD 7) - Glasgow, United Kingdom
Duration: 11 Jun 201815 Jun 2018

Conference

Conference7th European Conference on Computational Fluid Dynamics (ECFD 7)
CountryUnited Kingdom
CityGlasgow
Period11/06/201815/06/2018

Bibliographical note

This publication corresponds to the proceedings of the "7th European Conference on Computational Fluid Dynamics (ECFD 7)". <br/><br/>The authors have published, with authorization from the organizers, another version of this paper. It had the same title and it appeared in a Springer contributed book (already uploaded to Orbit). However, we believe that it is also interesting to include this publication here.<br/><br/>The four authors are affiliated to DTU: sgho, mham, nsqr and frza<br/>

Keywords

  • AVATAR
  • Computational Fluid Dynamics
  • Flaps
  • Fluid Structure Interaction
  • Vortex Induced Vibrations
  • Wind Energy

Cite this

Horcas, S. G., Madsen, M. H. A., Sørensen, N. N., & Zahle, F. (2018). Suppresing Vortex Induced Vibrations of Wind Turbine blades with flaps. In Proceedings of the 7th European Conference on Computational Fluid Dynamics (ECFD 7) European Community on Computational Methods in Applied Sciences.
Horcas, Sergio González ; Madsen, Mads Holst Aagaard ; Sørensen, Niels N. ; Zahle, Frederik. / Suppresing Vortex Induced Vibrations of Wind Turbine blades with flaps. Proceedings of the 7th European Conference on Computational Fluid Dynamics (ECFD 7). European Community on Computational Methods in Applied Sciences, 2018.
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title = "Suppresing Vortex Induced Vibrations of Wind Turbine blades with flaps",
abstract = "The present paper describes an exploratory work aiming to analyze the impact oftrailing edge flaps activation on Vortex Induced Vibrations (VIV) suppression. A computationalstudy of the VIV of the AVATAR rotor blade, a 10MW design suitable for offshore locations,was performed. A Fluid Structure Interaction (FSI) approach was adopted for the simulations,coupling an Improved Delayed Detached Eddy Simulations (IDDES) flow solver with a beam-based structural model. Initial simulations based on the clean geometry identified significantedgewise VIV for certain free stream velocity and flow inclination angles. The inflow conditionsshowing the maximum amplitude of blade vibrations were used in order to test several trailingedge flap geometries and operating angles. The best flap configuration found in that parametricstudy managed to suppress the VIV phenomenon. However, when assessing a wider range ofinflow conditions, the amplitudes of vibration of the blade equipped with flaps were found tobe equivalent to the ones obtained for its clean counterpart. It is therefore concluded that are-calibration of the flap operating angle should be required in order to adapt it to the consideredwind speed and wind direction.",
keywords = "AVATAR, Computational Fluid Dynamics, Flaps, Fluid Structure Interaction, Vortex Induced Vibrations, Wind Energy",
author = "Horcas, {Sergio Gonz{\'a}lez} and Madsen, {Mads Holst Aagaard} and S{\o}rensen, {Niels N.} and Frederik Zahle",
note = "This publication corresponds to the proceedings of the {"}7th European Conference on Computational Fluid Dynamics (ECFD 7){"}. <br/><br/>The authors have published, with authorization from the organizers, another version of this paper. It had the same title and it appeared in a Springer contributed book (already uploaded to Orbit). However, we believe that it is also interesting to include this publication here.<br/><br/>The four authors are affiliated to DTU: sgho, mham, nsqr and frza<br/>",
year = "2018",
language = "English",
booktitle = "Proceedings of the 7th European Conference on Computational Fluid Dynamics (ECFD 7)",
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Horcas, SG, Madsen, MHA, Sørensen, NN & Zahle, F 2018, Suppresing Vortex Induced Vibrations of Wind Turbine blades with flaps. in Proceedings of the 7th European Conference on Computational Fluid Dynamics (ECFD 7). European Community on Computational Methods in Applied Sciences, 7th European Conference on Computational Fluid Dynamics (ECFD 7), Glasgow, United Kingdom, 11/06/2018.

Suppresing Vortex Induced Vibrations of Wind Turbine blades with flaps. / Horcas, Sergio González; Madsen, Mads Holst Aagaard; Sørensen, Niels N.; Zahle, Frederik.

Proceedings of the 7th European Conference on Computational Fluid Dynamics (ECFD 7). European Community on Computational Methods in Applied Sciences, 2018.

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

TY - GEN

T1 - Suppresing Vortex Induced Vibrations of Wind Turbine blades with flaps

AU - Horcas, Sergio González

AU - Madsen, Mads Holst Aagaard

AU - Sørensen, Niels N.

AU - Zahle, Frederik

N1 - This publication corresponds to the proceedings of the "7th European Conference on Computational Fluid Dynamics (ECFD 7)". <br/><br/>The authors have published, with authorization from the organizers, another version of this paper. It had the same title and it appeared in a Springer contributed book (already uploaded to Orbit). However, we believe that it is also interesting to include this publication here.<br/><br/>The four authors are affiliated to DTU: sgho, mham, nsqr and frza<br/>

PY - 2018

Y1 - 2018

N2 - The present paper describes an exploratory work aiming to analyze the impact oftrailing edge flaps activation on Vortex Induced Vibrations (VIV) suppression. A computationalstudy of the VIV of the AVATAR rotor blade, a 10MW design suitable for offshore locations,was performed. A Fluid Structure Interaction (FSI) approach was adopted for the simulations,coupling an Improved Delayed Detached Eddy Simulations (IDDES) flow solver with a beam-based structural model. Initial simulations based on the clean geometry identified significantedgewise VIV for certain free stream velocity and flow inclination angles. The inflow conditionsshowing the maximum amplitude of blade vibrations were used in order to test several trailingedge flap geometries and operating angles. The best flap configuration found in that parametricstudy managed to suppress the VIV phenomenon. However, when assessing a wider range ofinflow conditions, the amplitudes of vibration of the blade equipped with flaps were found tobe equivalent to the ones obtained for its clean counterpart. It is therefore concluded that are-calibration of the flap operating angle should be required in order to adapt it to the consideredwind speed and wind direction.

AB - The present paper describes an exploratory work aiming to analyze the impact oftrailing edge flaps activation on Vortex Induced Vibrations (VIV) suppression. A computationalstudy of the VIV of the AVATAR rotor blade, a 10MW design suitable for offshore locations,was performed. A Fluid Structure Interaction (FSI) approach was adopted for the simulations,coupling an Improved Delayed Detached Eddy Simulations (IDDES) flow solver with a beam-based structural model. Initial simulations based on the clean geometry identified significantedgewise VIV for certain free stream velocity and flow inclination angles. The inflow conditionsshowing the maximum amplitude of blade vibrations were used in order to test several trailingedge flap geometries and operating angles. The best flap configuration found in that parametricstudy managed to suppress the VIV phenomenon. However, when assessing a wider range ofinflow conditions, the amplitudes of vibration of the blade equipped with flaps were found tobe equivalent to the ones obtained for its clean counterpart. It is therefore concluded that are-calibration of the flap operating angle should be required in order to adapt it to the consideredwind speed and wind direction.

KW - AVATAR

KW - Computational Fluid Dynamics

KW - Flaps

KW - Fluid Structure Interaction

KW - Vortex Induced Vibrations

KW - Wind Energy

M3 - Article in proceedings

BT - Proceedings of the 7th European Conference on Computational Fluid Dynamics (ECFD 7)

PB - European Community on Computational Methods in Applied Sciences

ER -

Horcas SG, Madsen MHA, Sørensen NN, Zahle F. Suppresing Vortex Induced Vibrations of Wind Turbine blades with flaps. In Proceedings of the 7th European Conference on Computational Fluid Dynamics (ECFD 7). European Community on Computational Methods in Applied Sciences. 2018