Influence of blockage effect and of turbulence intensity on the flow around U-profile

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F25%3A00619498" target="_blank" >RIV/68378297:_____/25:00619498 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.21495/em2025-105" target="_blank" >https://doi.org/10.21495/em2025-105</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.21495/em2025-105" target="_blank" >10.21495/em2025-105</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of blockage effect and of turbulence intensity on the flow around U-profile

Popis výsledku v původním jazyce

The significant distortion of wind tunnel data may occur, when the boundary layer of the tunnel wall interacts and modifies the flow around the tested object. To numerically evaluate the influence of this blockage effect on aerodynamic coefficients, 2D RANS simulations of airflow around porous and non-porous U-profiles in two computational domains with varying distances between the top and bottom walls were carried out. Another factor investigated in relation to aerodynamic characteristics was the turbulence intensity of the inlet stream. Simulations of the U-profile at various impact angles, using two differently sized computational domains and two levels of turbulent intensity, were performed. The mean drag and lift coefficients, fluctuating lift coefficient, and Strouhal number were evaluated.

Název v anglickém jazyce

Influence of blockage effect and of turbulence intensity on the flow around U-profile

Popis výsledku anglicky

The significant distortion of wind tunnel data may occur, when the boundary layer of the tunnel wall interacts and modifies the flow around the tested object. To numerically evaluate the influence of this blockage effect on aerodynamic coefficients, 2D RANS simulations of airflow around porous and non-porous U-profiles in two computational domains with varying distances between the top and bottom walls were carried out. Another factor investigated in relation to aerodynamic characteristics was the turbulence intensity of the inlet stream. Simulations of the U-profile at various impact angles, using two differently sized computational domains and two levels of turbulent intensity, were performed. The mean drag and lift coefficients, fluctuating lift coefficient, and Strouhal number were evaluated.

Druh

D - Stať ve sborníku

CEP obor

—

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

2025

Kód důvěrnosti údajů

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

Název statě ve sborníku

Engineering mechanics 2025. Book of full texts

ISBN

978-80-86246-96-3

ISSN

1805-8248

e-ISSN

1805-8256

Počet stran výsledku

4

Strana od-do

105-108

Název nakladatele

Institute of Theoretical and Applied Mechanics of the Czech Academy of Sciences

Místo vydání

Prague

Místo konání akce

Medlov

Datum konání akce

12. 5. 2025

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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