Different regimes of the flow around a U-beam and their importance for flutter vibrations

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F15%3A00449183" target="_blank" >RIV/68378297:_____/15:00449183 - isvavai.cz</a>
Result on the web
<a href="http://publik.tuwien.ac.at/files/PubDat_240986.pdf" target="_blank" >http://publik.tuwien.ac.at/files/PubDat_240986.pdf</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Different regimes of the flow around a U-beam and their importance for flutter vibrations
Original language description
Vibrations of a slender U-profile in turbulent cross-flow are studied with the aid of 2D-CFD simulations and wind tunnel experiments. The simulations indicate that there are two different patterns of the flow around the stationary U-profile. Vortices form either towards the leeward flange of the profile, or behind its windward flange. The latter vortices move through the cavity of the profile and lead to large fluctuations of the aerodynamic forces. Thus, the flow patterns determine the vibration response of the U-profile. By comparison with wind tunnel experiments it is shown that aspects of either flow pattern are present in the real flow field. Contrary to simulation results the real flow appears to change between either flow pattern. At zero inclination neither flow pattern prevails. Inclining the pro- file favours one or the other flow pattern. The importance of the inclination angle and the flow pattern becomes apparent when studying free vibrations of a tensioned belt with U-sha
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of the Conference on Modelling Fluid Flow 2015
ISBN
978-963-313-190-9
ISSN
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e-ISSN
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Number of pages
8
Pages from-to
1-8
Publisher name
TU Wien
Place of publication
Wien
Event location
Budapešť
Event date
Sep 1, 2015
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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