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Reynolds-Number Effects on Bridge Aerodynamics

Schewe, G. (2004) Reynolds-Number Effects on Bridge Aerodynamics. Workshop Long-Span Bridge Aeroelasticity, Naples, Italy, 29-30 April 2004.

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Official URL: http://www.ae.go.dlr.de/exp/pub/BBAA_ges.pdf


Long span bridges are composed of more or less bluff bodies. A main point of the lecture is the question: In which case does the Re. No. play a significant role, in particular concerning their influence on the propensity to flow induced vibrations. The paper reviews the results of experiments carried out over a wide range of Reynolds numbers ( 104 < Re < 107 ) on 2-D sections. The bodies are a circular cylinder, a bridge section, and a thick airfoil at high angle of attack. In all cases, variation of Re led to dramatic changes in the force coefficients and St. No., caused by changes in the topological structure of the separated flow. The important results are, that there are 2-D sections that behave as a bluff- or streamlined body, depending on Re, and that slender bodies with sharp-edged cross-sections may also suffer pronounced Re. No effects.

Item URL in elib:https://elib.dlr.de/14513/
Document Type:Conference or Workshop Item (Speech)
Additional Information: LIDO-Berichtsjahr=2005,
Title:Reynolds-Number Effects on Bridge Aerodynamics
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Reynolds-Number Effects, bridge aerodynamics, fow induced vibrations
Event Title:Workshop Long-Span Bridge Aeroelasticity, Naples, Italy, 29-30 April 2004
Organizer:University of Naples
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:other
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:16 Sep 2005
Last Modified:14 Jan 2010 21:57

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