Wind Energy Science
Wind Energy Science
WES
Articles | Volume 7, issue 6
Articles | Volume 7, issue 6
https://doi.org/10.5194/wes-7-2201-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wes-7-2201-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 7, issue 6
Research article
 | 
07 Nov 2022
Research article |  | 07 Nov 2022

Multiple limit cycle amplitudes in high-fidelity predictions of standstill wind turbine blade vibrations

Christian Grinderslev, Niels Nørmark Sørensen, Georg Raimund Pirrung, and Sergio González Horcas

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Short summary
As wind turbines increase in size, the risk of flow-induced instabilities increases. This study investigates the phenomenon of vortex-induced vibrations (VIVs) on a large 10 MW wind turbine blade using two high-fidelity methods. It is found that VIVs can occur with multiple equilibrium states for the same flow case, showing an dependence on the initial conditions. This means that a blade which is stable in a flow can become unstable if, e.g., a turbine operation provokes an initial vibration.
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