Studying the Wake of a Tidal Turbine with an IBM-LBM Approach Using Realistic Inflow Conditions

Mickael Grondeau, Sylvain S. Guillou, Jean Charles Poirier, Philippe Mercier, Emmnuel Poizot and Yann Méar
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Mickael Grondeau: Normadie University, UNICAEN, LUSAC, EA4253, 60, Rue Max-Pol Fouchet, CS 20082 Cherbourg, France
Sylvain S. Guillou: Normadie University, UNICAEN, LUSAC, EA4253, 60, Rue Max-Pol Fouchet, CS 20082 Cherbourg, France
Jean Charles Poirier: SIREHNA, Naval Group, Technocampus Océan, 5 rue de l’Halbrane, 44340 Bouguenais, France
Philippe Mercier: Normadie University, UNICAEN, LUSAC, EA4253, 60, Rue Max-Pol Fouchet, CS 20082 Cherbourg, France
Emmnuel Poizot: Normadie University, UNICAEN, LUSAC, EA4253, 60, Rue Max-Pol Fouchet, CS 20082 Cherbourg, France
Yann Méar: Normadie University, UNICAEN, LUSAC, EA4253, 60, Rue Max-Pol Fouchet, CS 20082 Cherbourg, France

Energies, 2022, vol. 15, issue 6, 1-34

Abstract: The lattice Boltzmann method is used to model a horizontal axis tidal turbine. Because tidal turbines generally operate in highly turbulent flows, a synthetic eddy method is implemented to generate realistic turbulent inflow condition. The approach makes use of the open-source code Palabos. Large eddy simulation is employed. A coupling between an immersed boundary method and a wall model is realized to model the turbine. Calculations are performed at two different turbulence rates. The upstream flow condition is first set up to match with experimental results. Numerical simulations of a tidal turbine with realistic turbulent inflow conditions are then realized with the lattice Boltzmann method. The approach is found to be in good agreement with experimental data. Cases with three different inflow turbulence rates are simulated. An almost linear evolution with the turbulence rate is observed for the axial velocity deficit. An analysis of the propagation of tip-vortices in the close wake is carried out. It is found that turbulence has a great impact on the tip-vortices propagation envelope.

Keywords: tidal turbine; wake; turbulence; numerical simulation; lattice Boltzmann method (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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