Numerical Investigation of Wind Effects on the Perforated Structures

Radomil Král; Stanislav Pospíšil

doi:10.4028/www.scientific.net/AMM.821.591

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 821Numerical Investigation of Wind Effects on the...

Numerical Investigation of Wind Effects on the Perforated Structures

Abstract:

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 surface. 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 the barrier on the flow field is a loss in the normal momentum component and the change in the flow direction. On the other hand, the authentic simulation of the fluid mechanics requires specifying the relevant input parameters that can be determined by an experiment or by using a corresponding handbook.

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Periodical:

Applied Mechanics and Materials (Volume 821)

Pages:

591-598

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.821.591

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Online since:

January 2016

Authors:

Radomil Král*, Stanislav Pospíšil

Keywords:

CFD, Perforated Surface, Resistance Barrier, Screen Boundary Condition, Wind Effect

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