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Stability analysis ...
Stability analysis of the tip vortices of a wind turbine
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- Ivanell, Stefan (author)
- KTH,Mekanik,Linné Flow Center, FLOW,Gotland University, Sweden
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Mikkelsen, R. (author)
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Sørensen, J. N. (author)
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- Henningson, Dan Stefan (author)
- KTH,Mekanik,Linné Flow Center, FLOW
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(creator_code:org_t)
- 2008
- 2008
- English.
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In: 46th AIAA Aerospace Sciences Meeting and Exhibit. - 9781563479373
- Related links:
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https://urn.kb.se/re...
Abstract
Subject headings
Close
- The aim of the present project is to get a better understanding of the stability properties of wakes generated by wind turbine rotors. To determine the stability properties of wind turbine wakes a numerical study on the stability of the tip vortices behind the Tjaereborg wind turbine has been carried out. The numerical model is based on large eddy simulations of the Navier-Stokes equations using the actuator line method to generate the wake and the tip vortices. To determine critical frequencies the flow is perturbed by inserting a harmonic perturbation. The results show that the instability is dispersive and that growth arise only for some specific frequencies and type of modes.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
Keyword
- Critical frequencies
- Harmonic perturbations
- Numerical models
- Numerical studies
- Specific frequencies
- Stability analysis
- Stability properties
- Tip vortex
- Wind turbine rotors
- Wind turbine wakes
- Aerodynamics
- Aerospace engineering
- Computer simulation
- Flow control
- Navier Stokes equations
- Wakes
- Wind power
- Wind tunnels
- Wind turbines
- Stability
Publication and Content Type
- ref (subject category)
- kon (subject category)
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