Numerical FSI Investigation based on LES: Flow past a cylinder with a flexible splitter plate involving large deformations (FSI-PfS-2a) - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue International Journal of Heat and Fluid Flow Année : 2014

Numerical FSI Investigation based on LES: Flow past a cylinder with a flexible splitter plate involving large deformations (FSI-PfS-2a)

Résumé

The objective of this paper is to provide a detailed numerical investigation on the fluid-structure interaction (FSI) test case presented in Kalmbach and Breuer (Journal of Fluids and Structures, 42, (2013), pp. 369-387). It relies on detailed experimental investigations on the fluid flow and the structure deformation using modern optical measurement techniques such as particle-image velocimetry and laser triangulation sensors. The present numerical study is based on an efficient partitioned FSI coupling scheme especially developed for turbulent flow simulations around light-weight structures using large-eddy simulation. The current FSI configuration is composed of a fixed cylinder with a flexible thin rubber plate and a rear mass inducing a turbulent flow (Re = 30,470). Mainly based on a movement-induced excitation the flexible structure oscillates in the second swiveling mode involving large deformations. Thus, particular attention has been paid to the computational model and the numerical set-up. Special seven-parameters shell elements are applied to precisely model the flexible structure. Structural tests are carried out to approximate the optimal structural parameters. A fine and smooth fluid mesh has been generated in order to correctly predict the wide range of different flow structures presents near and behind the flexible rubber plate. A phase-averaging is applied to the numerical results obtained, so that they can be compared with the phase-averaged experimental data. Both are found to be in close agreement exhibiting a structure deformation in the second swiveling mode with similar frequencies and amplitudes. Finally, a sensitivity study is carried out to show the influence of different physical parameters (e.g. Young’s modulus) and modeling aspects (e.g. subgrid-scale model) on the FSI phenomenon.
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Dates et versions

hal-01086349 , version 1 (24-11-2014)

Licence

Paternité - Pas d'utilisation commerciale - Pas de modification

Identifiants

Citer

Guillaume de Nayer, Michael Breuer. Numerical FSI Investigation based on LES: Flow past a cylinder with a flexible splitter plate involving large deformations (FSI-PfS-2a). International Journal of Heat and Fluid Flow, 2014, 50, pp.300-315. ⟨10.1016/j.ijheatfluidflow.2014.08.013⟩. ⟨hal-01086349⟩
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