Lattice Boltzmann Analysis of Fluid-Structure Interaction with Moving Boundaries
Alessandro De Rosis 1*, Giacomo Falcucci 2, Stefano Ubertini 3, Francesco Ubertini 1, Sauro Succi 41 Department of Civil, Environmental and Materials Engineering, University of Bologna, Bologna 40136, Italy.
2 Department of Technologies, University of Naples "Parthenope", Naples, Italy.
3 DEIM - Industrial Engineering School, University of Tuscia, Largo dell'Universita s.n.c., 01100, Viterbo, Italy.
4 Istituto per le Applicazioni del Calcolo - CNR, Via dei Taurini, 00100 Roma, Italy.
Received 14 November 2011; Accepted (in revised version) 20 December 2011
Available online 29 August 2012
This work is concerned with the modelling of the interaction of fluid flow with flexibly supported rigid bodies. The fluid flow is modelled by Lattice-Boltzmann Method, coupled to a set of ordinary differential equations describing the dynamics of the solid body in terms its elastic and damping properties. The time discretization of the body dynamics is performed via the Time Discontinuous Galerkin Method. Several numerical examples are presented and highlight the robustness and efficiency of the proposed methodology, by means of comparisons with previously published results. The examples show that the present fluid-structure method is able to capture vortex-induced oscillations of flexibly-supported rigid body.
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PACS: 62, 47
Key words: Lattice-Boltzmann method, fluid-structure interaction.
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