The effects of wind-induced inclination on the dynamics of semi-submersible floating wind turbines in the time domain

Raffaello Antonutti, Christophe Peyrard, Lars Johanning, Atilla Incecik, David Ingram

Research output: Contribution to journalArticlepeer-review

Abstract

This study focusses on the coupling effects arising from the changes in the hydro-dynamic behaviour of a semi-submersible floating wind turbine when it undergoes large inclinations under wind loading. By means of a range of time-domain simulations, it is shown that both the hull geometric nonlinearity effect and the alteration of viscous hydrodynamic forces can significantly affect the dynamics of a typical floating wind turbine operating in waves at rated conditions. The consequences of said effects for both aligned and misaligned wind and waves are explored. In general terms inclinations are found to increase motions, where the modes that are more aected depend on the relative direction between incident wind and waves. Understanding the sources of aero-hydrodynamic coupling is key to providing sound design and modelling guidelines for the coming generation of floating wind turbines.
Original languageEnglish
Pages (from-to)83–94
Number of pages24
JournalRenewable Energy
Volume88
Early online date5 Dec 2015
DOIs
Publication statusPublished - Apr 2016

Keywords

  • floating wind
  • turbine
  • semi-submersible
  • large-angle
  • inclination

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