Title: Numerical FSI investigation based on LES
Subtitle: Flow past a cylinder with a flexible splitter plate involving large deformations (FSI-PfS-2a)
Authors: De Nayer, Guillaume  
Breuer, Michael  
Language: en_US
Subject (DDC): DDC - Dewey Decimal Classification::000 Informatik, Wissen, Systeme
DDC - Dewey Decimal Classification::500 Naturwissenschaften
DDC - Dewey Decimal Classification::600 Technik
Issue Date: Dec-2014
Publisher: Elsevier
Document Type: Article
Source: In: The international journal of heat and fluid flow. - New York, NY [u.a.] : Elsevier, 1979- ; ZDB-ID: 759894-4 . - Bd. 50.2014, Seite 300-315
Journal / Series / Working Paper (HSU): International Journal of Heat and Fluid Flow 
Volume: 50
Page Start: 300
Page End: 315
Publisher Place: New York, NY
© 2014 Elsevier Inc. 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 (J. of Fluids and Structures, 42, (2013), 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.
Organization Units (connected with the publication): Strömungsmechanik 
URL: https://api.elsevier.com/content/abstract/scopus_id/84911114872
ISSN: 0142727X
DOI: 10.1016/j.ijheatfluidflow.2014.08.013
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