Etude des effets de la houle sur une hydrolienne avec le code vortex particulaire DOROTHY

In this paper, the validation of a Stokes first order wave-current model is performed after having detailed its implementation on top of the Lagrangian vortex particle (VP) Navier-Stokes solver named Dorothy. The results show that the lifting-line (LL) turbine blades provide accurate loads evaluation under wave conditions. Averaged performance remains unaffected by waves but with a significant increase of standard deviations correlated with an increasing tip speed ratio. This method also makes it possible to study the development of the wake in the presence of following and opposing current waves. Pulsations in the wake due to waves effect are evidenced.