Effects of wind-wave misalignment on the dynamic response of an offshore wind turbine in highly nonlinear waves
Abstract eng: This paper presents a systematic study on the effect of wind-wave misalignment on the sensitivity of monopile-supported offshore wind turbines to wave nonlinearities. It has been shown that monopilesupported offshore wind turbines in a parked state are prone to highly nonlinear resonant phenomena induced by wave nonlinearities. On the contrary, if the turbine is in a power-production state, wave nonlinearities are negligible due to the increased aerodynamic damping. However, in the case of windwaves misalignment, since the rotor plane is always facing the main wind direction, the effects of aerodynamic damping is reduced in the directions of waves. In this study a monopile-supported offshore wind turbine is modelled in linear, fully nonlinear and no waves, with wind-wave misalignment varying from 0° to 90° in steady increments. The main conclusion is that as the misalignment angle increases, the influence of wave nonlinearities decreases for a parked turbine but slightly increases for a turbine in power production.
Contributors:
Publisher:
l'Association pour l'Ingénierie du Vent
Conference Title:
Conference Title:
7th European and African Conference on Wind Engineering
Conference Venue:
Liège, BE
Conference Dates:
2017-07-04 / 2017-07-07
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.
Record appears in:
Record created 2017-07-24, last modified 2017-07-24
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