Original title: Influence of blockage effect and of turbulence intensity on the flow around U-profile
Authors: Ledvinková, Blanka ; Hračov, Stanislav ; Macháček, Michael
Document type: Papers
Conference/Event: Engineering mechanics 2025. International conference /31./, Medlov (CZ), 20250512
Year: 2025
Language: eng
Abstract: 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.
Keywords: aerodynamic characteristics; blockage effect; RANS simulation; turbulent intensity; U-profile
Project no.: GA24-13061S (CEP)
Funding provider: GA ČR
Host item entry: Engineering mechanics 2025. Book of full texts, ISBN 978-80-86246-96-3, ISSN 1805-8248

Institution: Institute of Theoretical and Applied Mechanics AS ČR (web)
Document availability information: Fulltext is available in the digital repository of the Academy of Sciences.
Original record: https://hdl.handle.net/11104/0366376

Permalink: http://www.nusl.cz/ntk/nusl-679009


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Research > Institutes ASCR > Institute of Theoretical and Applied Mechanics
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