Floating Wind Turbines

Project duration: May 01. 2017 - April 30. 2021Funding

The project has been funded largely by MARIN and ISMT. Moreover, computing time has been granted by the Center for Computational Sciences and Simulation (CCSS) of the University of Duisburg-Essen and provided on the supercomputer magnitUDE (DFG grants INST 20876/209-1 FUGG, INST 20876/243-1 FUGG) at the Zentrum fuer Informations- und Mediendienste (ZIM).

Project partner



Involved Scientist

Simon Mewes (geb. Burmester) M. Sc.
Dr.-Ing. Guilherme Vaz
Prof. Dr.-Ing. Bettar Ould el Moctar

Project description

This research project focuses on the investigation of hydrodynamic damping of a moored semi-submersible floating wind turbine using Reynolds-Averaged Navier-Stokes equations. The investigations include systematic verification studies comparing discretisation error and uncertainty quantification methods on different aspects of floating wind turbine simulations. The aspects are wave propagation, wave loads on a circular surface piercing cylinder, surge decay of a semi-submersible, and the dynamic mooring model in surge decay motion.

The discretisation error and uncertainty estimation methods rely on Richardson extrapolation. Furthermore, a variety of different settings and models are studied to predict hydrodynamic damping, including temporal and spatial discretisation, wave radiation, turbulence, and mooring models. For each model and setting, the hydrodynamic damping as well as the flow field are analysed. The extensive verification studies conducted in this project and the detailed investigation on hydrodynamic damping are new to the existing research on wind turbine floaters.



Results for 6DOF surge decay simulation with initial displacements for each DOF compared with the experiment. The discretisation uncertainty bar is a result for the independent RANS and dynamic mooring simulations.


Vortices around the floater in top view are displayed using Q = 0.5 s−2 and coloured with the velocity in Y direction.