Harmonic oscillations of a thin lamina in a quiescent viscous fluid: A numerical investigation within the framework of the lattice Boltzmann method. (September 2015)

• Record Type: Journal Article
• Authors: De Rosis, Alessandro; Lévêque, Emmanuel
• Is Part Of: Computers & structures. Volume 157(2015)
• Page Start: 209
• Page End: 217
• Publication Date: 2015-09
• Subjects: Fluid–structure interaction -- Hydrodynamic load -- Lattice Boltzmann method -- Immersed boundary method; Structural engineering -- Data processing -- Periodicals; Electronic data processing -- Structures, Theory of -- Periodicals; 624.171
• DOI: 10.1016/j.compstruc.2015.05.034
• Languages: English
• ISSNs: 0045-7949

Abstract

Abstract: 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.