Laboratoire de Mécanique des Fluides et d'Acoustique - UMR 5509

LMFA - UMR 5509
Laboratoire de Mécanique des Fluides et d’Acoustique
Lyon
France


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Accueil > Équipes > Turbulence & Instabilités > Publications T&I > Publications T&I 2015

Article dans Computers & Structures (2015)

Harmonic oscillations of a thin lamina in a quiescent viscous fluid : A numerical investigation within the framework of the lattice Boltzmann method

Alessandro De Rosis & Emmanuel Lévêque

Harmonic oscillations of a thin lamina in a quiescent viscous fluid : A numerical investigation within the framework of the lattice Boltzmann method

The flow physics induced by the harmonic motion of a rigid thin lamina in a quiescent viscous fluid is investigated numerically by a combined lattice Boltzmann-immersed boundary approach. Consistency and accuracy are carefully examined and validated against experimental results for oscillations of small and moderate amplitudes, and against analytical predictions for zero-amplitude oscillations. Comparisons with previous lattice Boltzmann simulations highlight the benefit of the present approach in terms of accuracy. A new empirical law for the hydrodynamic function, which accounts for oscillations of large amplitudes (similar to the length of the lamina) is introduced.
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