Direct numerical simulations of aerodynamic performance of wind turbine airfoil by considering flap-wise blade oscillations

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Aeroelasticity of modern wind turbines is a critical issue which can significantly affect the structural integrity and lifetime of the wind turbine blades. However, previous aeroelastic or aerodynamic studies were mostly concentrated on low-fidelity numerical methods, and the details of flow separation and vortex generation over wind turbine airfoils cannot be detected with these methods. In this study, a high-fidelity direct numerical model is used to investigate the details of flow separations and laminar separation bubbles (LSB) over a NACA-0012 wind turbine airfoil under oscillation. The simulations are conducted at Reynolds number of Re=1.3×105 and the blade has harmonic pitch-wise oscillations at Mach number of 𝑀𝑎ஶ = 0.4. Strong fluctuations are observed in the wake region of the vibrating wind turbine blade. The results show that the blade vibrations have a significant influence on vortex generation and separation point over wind turbine blades. details of flow structure over wind turbine blades compared to previously proposed models.
Original languageEnglish
Title of host publicationProceedings of ASME Turbo Expo 2022
Subtitle of host publicationTurbomachinery Technical Conference and Exposition, GT2022
Place of PublicationNew York, US
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages1-10
Number of pages10
Publication statusAccepted/In press - 15 Mar 2022
EventASME Turbo Expo 2022
: Turbomachinery Technical Conference & Exposition
- Rotterdam Ahoy Convention Centre, Rotterdam, Netherlands
Duration: 13 Jun 202217 Jun 2022
https://event.asme.org/Turbo-Expo-2022

Conference

ConferenceASME Turbo Expo 2022
Country/TerritoryNetherlands
CityRotterdam
Period13/06/2217/06/22
Internet address

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