Modelling the wake of a tidal turbine with upstream turbulence
LBM-LES versus Navier-Stokes LES
Keywords:Tidal turbine, Turbulence, Computational Fluid Dynamics, Large Eddy Simulation, Lattice Boltzmann method, Navier-Stokes equations
Tidal turbines are entering an industrial phase and farms will soon be installed. In order to optimize the power output of tidal farms, a good understanding of the interactions between the ambient turbulence and a single turbine is crucial. Computational Fluid Dynamics, and more precisely Large Eddy Simulation, is one way of acquiring such knowledge. This study proposed a comparison between a Lattice Boltzmann Method LES approach and a Navier-Stokes LES approach to model the wake of a tidal turbine. Numerical results are compared with experimental results and a relatively good concordance is observed. Differences inherent to the approaches are then pointed out.
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