Til hovedinnhold

Dynamic analysis of offshore monopile wind turbine including the effects of wind-wave loading and soil properties

Dynamic analysis of offshore monopile wind turbine including the effects of wind-wave loading and soil properties

Kategori
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Sammendrag
An engineering approach to dynamic analysis of an offshore monopile wind turbine is presented in this paper. The wind-wave coupling for shallow water conditions is considered. Different wind, wave and current loads on the wind turbine within the cut-in and cut-off conditions are taken into account. The hydrodynamic loading is computed based on the corresponding sea-states. The interaction between the foundation and the soil is simulated by nonlinear springs, which stiffness properties are obtained from the axial load transfer (t-z) curve, the tip load-displacement (Q-z) curve and the lateral load-deflection (p-y) curve. Three types of soil conditions are considered in the simulations, i.e., 100% sand layer, 50% sand layer (top) and 50% clay layer (bottom), as well as 100% clay layer. For a given current speed, the variations of the static and the dynamic responses of the wind turbine due to the effects of different wind-wave load combinations and soil conditions have been investigated and discussed.
Språk
Engelsk
Forfatter(e)
  • Muk Chen Ong
  • Hui Li
  • Bernt Johan Leira
  • Dag Myrhaug
Institusjon(er)
  • SINTEF Ocean / Energi og transport
  • Harbin Institute of Shipbuilding Engineering
  • Norges teknisk-naturvitenskapelige universitet
År
Forlag
The American Society of Mechanical Engineers (ASME)
Bok
32nd International Conference on Ocean, Offshore and Arctic Engineering Volume 8: Ocean Renewable Energy
Hefte nr.
8
ISBN
978-0-7918-5542-3