Název: Influence of blockage effect and of turbulence intensity on the flow around U-profile
Autoři: Ledvinková, Blanka ; Hračov, Stanislav ; Macháček, Michael
Typ dokumentu: Příspěvky z konference
Konference/Akce: Engineering mechanics 2025. International conference /31./, Medlov (CZ), 20250512
Rok: 2025
Jazyk: eng
Abstrakt: 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.
Klíčová slova: aerodynamic characteristics; blockage effect; RANS simulation; turbulent intensity; U-profile
Číslo projektu: GA24-13061S (CEP)
Poskytovatel projektu: GA ČR
Zdrojový dokument: Engineering mechanics 2025. Book of full texts, ISBN 978-80-86246-96-3, ISSN 1805-8248

Instituce: Ústav teoretické a aplikované mechaniky AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v repozitáři Akademie věd.
Původní záznam: https://hdl.handle.net/11104/0366376

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-679009


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav teoretické a aplikované mechaniky
Konferenční materiály > Příspěvky z konference