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Wind and Structures Volume 30, Number 1, January 2020 , pages 15-27 DOI: https://doi.org/10.12989/was.2020.30.1.015 |
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Numerical determination of wind forces acting on structural elements in the shape of a curved pipe |
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Agnieszka Padewska-Jurczak, Piotr Szczepaniak and Zbigniew Buliński
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| Abstract | ||
| This paper reports the study on development and verification of numerical models and analyzes of flow at high speed around structural elements in the shape of a curved pipe (e.g., a fragment of a water slide). Possibility of engineering estimation of wind forces acting on an object in the shape of a helix is presented, using relationships concerning toroidal and cylindrical elements. Determination of useful engineering parameters (such as aerodynamic forces, pressure distribution, and air velocity field) is presented, impossible to obtain from the existing standard EN 1991-1-4 (the so-called wind standard). For this purpose, flow at high speed around a torus and helix, arranged both near planar surface and high above it, was analyzed. Analyzes begin with the flow around a cylinder. This is the simplest object with a circular cross-section and at the same time the most studied in the literature. Based on this model, more complex models are analyzed: first in the shape of half of a torus, next in the shape of a helix. | ||
| Key Words | ||
| finite volume method; finite element method; computational fluid dynamics; fluid–structure interaction; wind engineering; wind action; water slide | ||
| Address | ||
| Agnieszka Padewska-Jurczak and Piotr Szczepaniak: Department of Mechanics and Bridges, Faculty of Civil Engineering, Silesian University of Technology, Akademicka 5, 44-100 Gliwice, Poland Zbigniew Buliński: Institute of Thermal Technology, Faculty of Energy and Environmental Engineering, Silesian University of Technology, Konarskiego 18, 44-100 Gliwice, Poland | ||