Impact of Rotor Misalignment Due to Platform Motions on Floating Offshore Wind Turbine Blade Loads
Smith, RE; Pillai, AC; Tabor, G; et al.Thies, PR; Johanning, L
Date: 11 November 2019
Publisher
American Society of Mechanical Engineers (ASME)
Publisher DOI
Abstract
The rotor of a horizontal-axis floating offshore wind
turbine is more frequently misaligned with the oncoming wind
than that of a fixed offshore or onshore wind turbine due to
the pitch and yaw motions of the floating support structure.
This can lead to increased unsteady loading and fatigue on
the components beyond those considered ...
The rotor of a horizontal-axis floating offshore wind
turbine is more frequently misaligned with the oncoming wind
than that of a fixed offshore or onshore wind turbine due to
the pitch and yaw motions of the floating support structure.
This can lead to increased unsteady loading and fatigue on
the components beyond those considered in the standard load
cases. In this work, the Simulator for On/Offshore Wind Farm
Applications (SOWFA) tool within the CFD toolbox
OpenFOAM is used to perform simulations of a wind turbine
at different stationary angles to the oncoming wind flow that
a floating wind turbine may experience, so that the impact of
misaligned flow on power production and blade loading can
be studied. The turbine is modelled using an actuator line
method which is coupled with NREL’s aeroelastic code FAST
to compute the structural response. The results of this study
will be used in future work to optimise the rotor geometry of
a floating offshore wind turbine.
Engineering
Faculty of Environment, Science and Economy
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