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Numerical investigation on the three-dimensional unsteady flow past a 5:1 rectangular cylinder

Mannini, Claudio and Soda, Ante and Schewe, Günter (2011) Numerical investigation on the three-dimensional unsteady flow past a 5:1 rectangular cylinder. Journal of Wind Engineering and Industrial Aerodynamics, Volume 99 (Issue 4), pp. 469-482. Elsevier. ISSN 0167-6105.

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Official URL: http://www.sciencedirect.com/science/journal/01676105/99/4


This paper deals with the three-dimensional simulation of the unsteady flow around a stationary 5:1 rectangular cylinder at zero-degree angle of attack, low Mach number (M∞=0.1) and high Reynolds number (Re=26,400, based on the plate thickness). Detached-Eddy Simulation (DES) was adopted as strategy of turbulence modeling. Results obtained with a hybrid mesh show satisfactory agreement when validated against experimental data and other computational results from the literature. Particular attention is devoted to the effects of the spanwise extension of the computational domain. Results show that the common choice of a spanwise period equal to the chord of the cylinder might not be enough to allow the natural loss of correlation of the pressure fluctuations and the free development of large-scale turbulent structures. The key role played by the amount of numerical dissipation, which is introduced by the second-order central difference scheme used to discretize the inviscid fluxes in the governing equations, is highlighted. The promising results obtained with DES for this benchmark test case suggest that this hybrid method is well suited for complex problems of high-Reynolds number bluff body aerodynamics and fluid–structure coupling.

Item URL in elib:https://elib.dlr.de/73375/
Document Type:Article
Title:Numerical investigation on the three-dimensional unsteady flow past a 5:1 rectangular cylinder
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Mannini, ClaudioCRIACIV / Department of Civil and Environmental Engineering, University of FlorenceUNSPECIFIED
Soda, AnteFaculty of Mechanical Engineering and Naval Architecture, University of ZagrebUNSPECIFIED
Schewe, Günterguenter.schewe (at) dlr.deUNSPECIFIED
Date:April 2011
Journal or Publication Title:Journal of Wind Engineering and Industrial Aerodynamics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Volume:Volume 99
Page Range:pp. 469-482
EditorsEmailEditor's ORCID iD
Stathopoulos, T.Dept. of Building, Civil and Environmental Engineering, Concordia University, 1455 boul de Maisonneuve O, Montréal, H3G 1M8, CanadaUNSPECIFIED
Keywords:bluff body aerodynamics, computational fluid dynamics, Detached-Eddy Simulation, rectangular cylinder, BARC benchmark
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L - no assignment
DLR - Research theme (Project):L - no assignment (old)
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity
Deposited By: Erdmann, Daniela
Deposited On:22 Dec 2011 10:09
Last Modified:06 Sep 2019 15:28

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