# Engineering Mechanics

Proceedings Vol. 32 (2026)

ENGINEERING MECHANICS 2026

Copyright © 2026 Institute of Thermomechanics of the Czech Academy of Sciences, Prague

 

Ledvinková B., Hračov S., Macháček M.
pages 77 - 80, full text

The blockage effect, arising from the confinement of flow by solid walls in wind tunnel testing, can significantly influence the aerodynamics of bluff bodies. In this study, its impact is numerically investigated using 2D RANS simulations of flow around rectangular cylinders with a side ratio of 2:1 at various angles of attack. The simulations were performed in computational domains with different distances between the upper and lower boundaries to represent varying levels of blockage. Key aerodynamic quantities, including mean drag, lift, and moment coefficients, were evaluated. Results obtained in domains with significant blockage were corrected using the Maskell method and compared with reference simulations in domains where blockage effects are negligible.

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