Engineering Mechanics

International Conference

Proceedings Vol. 21 (2015)


May 11 – 14, 2015, Svratka, Czech Republic
Editors: Jiří Náprstek and Cyril Fischer

Copyright © 2015 Institute of Theoretical and Applied Mechanics, Academy of Sciences of the Czech Republic, v.v.i., Prague

ISBN 978-80-86246-42-0 (printed, Extended Abstracts)
ISSN 1805-8248 (printed)
ISSN 1805-8256 (electronic)

list of papers scientific commitee

Numerical Investigation of Wind Effects on the Perforated Structures
R. Král, S. Pospíšil
pages 156 - 157, full text

The paper deals with a numerical analysis of wind effects on structures with perforated surfaces. The solution based on FEM model is governed by the stabilized Navier-Stokes equations for incompressible fluid. Special attention is given to perforated screens. Such a partly resistance barrier always introduces considerable numerical difficulties resulting from the complexity of a flow distortion when the fluid is passing through. For simplification, the barrier is assumed as a thin screen with specific resistance parameters where the fluid flow mechanism needs not be resolved. The general influence of a screen on the flow field is a loss in the normal momentum component and the change in flow direction. On the other hand, to simulate the fluid mechanics authentically it requires to specify the relevant input parameters that can be determined by an experiment or by using a corresponding handbook.

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Text and facts may be copied and used freely, but credit should be given to these Proceedings.

All papers were reviewed by members of the scientific committee.

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