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URANS and DES simulation of flow around bridge sections

Mannini, Claudio and Soda, Ante and Voß, Ralph and Schewe, Günter (2006) URANS and DES simulation of flow around bridge sections. In: Proceedings - 9th Italian Conference on Wind Engineering (IN-VENTO). 9th Italian Conference on Wind Engineering (IN-VENTO), 2006, Pescara, Italy (Europe).

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Abstract

This paper deals with the numerical simulation of the flow around three different two-dimensional bluff bodies: a 1:1 square cylinder, a 1:5 rectangular cylinder and a realistic bridge section. The Unsteady Reynolds-Averaged Navier-Stokes (URANS) and the Detached-Eddy Simulation (DES) techniques are employed. In the process the influence of various modelling parameters, such as turbulence modelling, and flow parameters, such as Reynolds number and incidence angle, is investigated. Validation of computed results with the experimental data shows that the URANS-based computational approach is well capable of predicting the basic unsteady flow phenomena in the considered cases. The preliminary DES results enable a better insight in the flow physics while, at the same time, confirming the much less expensive URANS predictions. In addition, it is shown that the sharpness of section corners plays a key role in the development of the flow around typical bridge deck profiles, strongly affecting the Strouhal number and global aerodynamic coefficients.

Item URL in elib:https://elib.dlr.de/47157/
Document Type:Conference or Workshop Item (Paper)
Title:URANS and DES simulation of flow around bridge sections
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Mannini, ClaudioUNSPECIFIEDUNSPECIFIED
Soda, AnteUNSPECIFIEDUNSPECIFIED
Voß, RalphUNSPECIFIEDUNSPECIFIED
Schewe, GünterUNSPECIFIEDUNSPECIFIED
Date:2006
Journal or Publication Title:Proceedings - 9th Italian Conference on Wind Engineering (IN-VENTO)
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:bridges, bluff bodies, computational aerodynamics, turbulence modelling
Event Title:9th Italian Conference on Wind Engineering (IN-VENTO)
Event Location:Pescara, Italy (Europe)
Event Type:international Conference
Event Dates:2006
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L ST - Starrflüglertechnologien
DLR - Research theme (Project):L - Flexible Aircraft (old)
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity
Deposited By: Erdmann, Daniela
Deposited On:20 Apr 2007
Last Modified:27 Apr 2009 13:29

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