The influence of the blockage effect on the aerodynamic characteristics of the bluff body in the air flow

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F24%3A00600493" target="_blank" >RIV/68378297:_____/24:00600493 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The influence of the blockage effect on the aerodynamic characteristics of the bluff body in the air flow

Popis výsledku v původním jazyce

Experiments on airflow around bluff bodies were conducted in a confined space in a wind tunnel. The presence of the body induces the blockage effect—reducing the cross-sectional area of the tunnel and causing an increase in flow velocity. 2D simulations of flow around sharply edged bodies (a rectangle with a 2:1 side ratio and a U-profile with a non-porous barrier) were performed at various angles of attack using the RANS k-ω SST model to evaluate the influence of the blockage effect. Two different computational domains were used: the first, with spacing between confining walls matching the actual dimensions of the wind tunnel at our institute (1.9 m), and the second, with a width of 7.5 m, assuming the blockage effect to be negligible in this case. The mean drag and lift coefficients, fluctuating lift coefficient, and Strouhal number were evaluated for both cases.

Název v anglickém jazyce

The influence of the blockage effect on the aerodynamic characteristics of the bluff body in the air flow

Popis výsledku anglicky

Experiments on airflow around bluff bodies were conducted in a confined space in a wind tunnel. The presence of the body induces the blockage effect—reducing the cross-sectional area of the tunnel and causing an increase in flow velocity. 2D simulations of flow around sharply edged bodies (a rectangle with a 2:1 side ratio and a U-profile with a non-porous barrier) were performed at various angles of attack using the RANS k-ω SST model to evaluate the influence of the blockage effect. Two different computational domains were used: the first, with spacing between confining walls matching the actual dimensions of the wind tunnel at our institute (1.9 m), and the second, with a width of 7.5 m, assuming the blockage effect to be negligible in this case. The mean drag and lift coefficients, fluctuating lift coefficient, and Strouhal number were evaluated for both cases.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA24-13061S" target="_blank" >GA24-13061S: Kombinované účinky aeroelastických nestabilit na stavební konstrukce</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název statě ve sborníku

Computational mechanics 2024. Proceedings of computational mechanics 2024

ISBN

978-80-261-1249-5

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

68-71

Název nakladatele

University of West Bohemia

Místo vydání

Plzeň

Místo konání akce

Srní

Datum konání akce

4. 11. 2024

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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