Generalization of the tidal turbine wakes dynamic in unsteady operating conditions.

Coastal hydrodynamics models make it possible to evaluate the behaviour of tidal turbines over several tidal
cycles, but not very precisely. The models developed on a more local scale are beginning to be sufficiently
reliable to generalize their use to simulate the behaviour and the wake dynamics of a set of tidal turbines in
unsteady flows.
As part of this thesis work, we propose to continue the developments of DOROTHY to develop sink/source
type models making it possible to take into account the prediction of energy production and dissipation when
passing through a tidal turbine farm. These models can be used to precisely initialize the source terms of
coastal models to simulate realistic industrial farms. The main objectives of this work are:
- to generalize the types of technologies that can be modelled (vertical and horizontal axis turbines);
- to carry out a comparative study of the near and far wakes emitted by the different types of tidal
turbines in unsteady operating conditions (turbulent flow, swell) ;
- to develop analytical models (sink/source type) for predicting energy production and dissipation
when passing through a tidal turbine farm in unsteady conditions.

Partenership between LOMC, Le Havre University https://www.lomc.fr/ and LHyMar IFREMER Boulogne/Mer.

The candidate must have a solid training in Mechanics / Fluid Mechanics and skills in applied mathematics and
numerical modelling.