| Institution: | 1. College of Engineering, Peking University, Beijing 100871, China;2. Institute of Ocean Research, Peking University, Beijing 100871, China;3. State Key Laboratory for Turbulence and Complex systems, Peking University, Beijing 100871, China;4. Institute of Systems Engineering, China Academy of Engineering Physics (CAEP), Mianyang 621900, China;1. Environmental Physics Laboratory, Universidade de Vigo, Campus As Lagoas s/n, 32004 Ourense, Spain;2. Flanders Hydraulic Research, Berchemlei 115, 2140 Antwerp, Belgium;3. Department of Civil Engineering, Ghent University, Technologiepark 904, 9052 Ghent, Belgium;1. The State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China;2. School of Science and Engineering, University of Dundee, DD1 4HN, United Kingdom |
| Abstract: | This paper presents results of numerical computations for floating off-shore wind turbines using, as an example, a machine of 10-MW rated power. The aerodynamic loads on the rotor are computed using the Helicopter Multi-Block flow solver developed at the University of Liverpool. The method solves the Navier–Stokes equations in integral form using the arbitrary Lagrangian–Eulerian formulation for time-dependent domains with moving boundaries. Hydrodynamic loads on the support platform are computed using the Smoothed Particle Hydrodynamics method, which is mesh-free and represents the water and floating structures by a set of discrete elements, referred to as particles. The motion of the floating offshore wind turbine is computed using a Multi-Body Dynamic Model of rigid bodies and frictionless joints. Mooring cables are modelled as a set of springs and dampers. All solvers were validated separately before coupling, and the results are presented in this paper. The importance of coupling is assessed and the loosely coupled algorithm used is described in detail alongside the obtained results. |
