Original title: Aerodynamic wind tunnel testing of U-beams
Authors: Hračov, Stanislav ; Macháček, Michael
Document type: Papers
Conference/Event: Computational Mechanics 2021 /36./, Srní (CZ), 20211108
Year: 2021
Language: eng
Abstract: The paper presents the outcomes from the experimental testing of the set of slender U-beams in the climatic wind tunnel. All analysed beams have identical basic geometry with the U-shaped cross section given by the side ratio equal to 2 (having the short side perpendicular to the flow), but they differ in the porosity of their flanges and in the depth of their profile. Two depths of the U-profile combined with six different levels of flange porosity are analysed. The U-beams were tested in the smooth flow in order to determine their aerodynamic coefficients for various angles of wind attack. The influences of the depth and porosity onto these coefficients are studied in detail. Moreover, the susceptibility of each individual case to transversal galloping is assessed based on the classical quasi-steady theory. The comparison with the results from the aerodynamic tests of the prisms with rectangular cross-sections having side rations equal to two, four and six is also given and discussed.
Keywords: aerodynamic coefficients; galloping; wind tunnel testing
Project no.: GA19-21817S (CEP)
Funding provider: GA ČR
Host item entry: Computational mechanics 2021. Proceedings of computational mechanics 2021, ISBN 978-80-261-1059-0
Note: Související webová stránka: https://www.kme.zcu.cz/compmech/info_sborniky.php

Institution: Institute of Theoretical and Applied Mechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0323843

Permalink: http://www.nusl.cz/ntk/nusl-508212


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