A wind tunnel analysis of flutter vibrations of a U-beam

Kód výsledku v IS VaVaI

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Výsledek na webu

<a href="http://paginas.fe.up.pt/eurodyn2014/CD/papers/435_MS20_ABS_1318.pdf" target="_blank" >http://paginas.fe.up.pt/eurodyn2014/CD/papers/435_MS20_ABS_1318.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

A wind tunnel analysis of flutter vibrations of a U-beam

Popis výsledku v původním jazyce

Motivated by assessing the aeroelastic stability of a conveyor solution, the aeroelastic stability of a U-beam with an aspect ratio (width B over frontal height H) of B/H = 4.62 is investigated. Wind-tunnel experiments involving a special test stand forsectional models and complementary CFD simulations were carried out. We find that the U-beam can perform self-excited two-degree of freedom (flutter) vibrations. This is also reflected in the simulation results. Vortex-induced vibrations were observed experimentally, but the amplitudes were small in respect to the frontal height. Numerically, it was found that there exist two different patterns of the flow around the U-profile: One pattern that is very similar to the flow around a rectangular prism ( ?R-flow pattern) and another pattern were the flow ?reaches into the pocket of the profile (?U-flow pattern). The amplitude of vortex induced vibrations depends strongly on the flow pattern. When the R-flow pattern is realized, the amplitud

Název v anglickém jazyce

A wind tunnel analysis of flutter vibrations of a U-beam

Popis výsledku anglicky

Motivated by assessing the aeroelastic stability of a conveyor solution, the aeroelastic stability of a U-beam with an aspect ratio (width B over frontal height H) of B/H = 4.62 is investigated. Wind-tunnel experiments involving a special test stand forsectional models and complementary CFD simulations were carried out. We find that the U-beam can perform self-excited two-degree of freedom (flutter) vibrations. This is also reflected in the simulation results. Vortex-induced vibrations were observed experimentally, but the amplitudes were small in respect to the frontal height. Numerically, it was found that there exist two different patterns of the flow around the U-profile: One pattern that is very similar to the flow around a rectangular prism ( ?R-flow pattern) and another pattern were the flow ?reaches into the pocket of the profile (?U-flow pattern). The amplitude of vortex induced vibrations depends strongly on the flow pattern. When the R-flow pattern is realized, the amplitud

Druh

D - Stať ve sborníku

CEP obor

JM - Inženýrské stavitelství

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of the 9th International Conference on Structural Dynamics. EURODYN 2014

ISBN

978-972-752-165-4

ISSN

2311-9020

e-ISSN

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Počet stran výsledku

8

Strana od-do

3113-3120

Název nakladatele

European Association for Structural Dynamics (EASD)

Místo vydání

Porto

Místo konání akce

Porto

Datum konání akce

30. 6. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000354786604020