Abstract
Two finite element models are coupled, with the aim of computing the mutual interactions between fluids and floating solids. The fluid and solid domains are discretised differently in space and time, and at every time step, the solid mesh is mapped onto the fluid mesh. The effect of the solid on the fluid dynamics, and vice versa, is modelled through a volumetric penalty force added to the momentum balances of the fluids and solids. A novel algorithm ensures that the action-reaction principle is satisfied at the discrete level. The coupled models are used to simulate uniform flow past a wind turbine, which is represented as a fixed actuator disc. Preliminary results on a floating pile also demonstrate the applicability of the models to fully coupled simulation of a floating spar. This work is a first-step towards the fully coupled modelling of floating wind turbines.
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Acknowledgments
This work is supported by the European Union Seventh Framework Programme (FP7/2007-2013) under a Marie-Curie Intra-European Fellowship (grant agreement PIEF-GA-2010-272437). The authors also wish to acknowledge support from EPSRC, NERC, the Grantham Institute for Climate Change and the High Performance Computing Service at Imperial College London. The content of this paper reflects only the authors′ views and not those of the European Commission.
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Viré, A., Xiang, J., Piggott, M.D., Cotter, C.J., Latham, JP., Pain, C.C. (2014). Towards the Numerical Modelling of Floating Offshore Renewables. In: Zhou, Y., Liu, Y., Huang, L., Hodges, D. (eds) Fluid-Structure-Sound Interactions and Control. Lecture Notes in Mechanical Engineering. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-40371-2_59
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DOI: https://doi.org/10.1007/978-3-642-40371-2_59
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