International Workshop on Fluid-Structure Interaction: Theory, Numerics and Applications, Date: 2008/09/01 - 2008/09/01, Location: BELGIUM, Louvain

Publication date: 2008-09-01
Pages: 781 - 795
ISSN: 90-73802-82-2, 9789073802827
Publisher: KATHOLIEKE UNIV LEUVEN, DEPT WERKTUIGKUNDE

Proceedings of the International Workshop on Fluid-Structure Interaction: Theory, Numerics and Applications

Author:

Dooms, David
De Roeck, Guido ; Degrande, Geert ; Sas, P ; DeMunck, M

Keywords:

Science & Technology, Technology, Acoustics, Engineering, Mechanical, Engineering, INDUCED OVALLING OSCILLATIONS, CROSS-FLOW, SHELLS

Abstract:

Circular cylindrical shell structures are sensitive to wind induced ovalling oscillations, which is an aeroelastic phenomenon. Coupled numerical models of the structure and the wind flow around the structure aim to predict the onset flow velocity. This paper presents a finite element model of a silo that is validated by means of experimental results that have been measured on a silo on which ovalling has been observed. The best agreement between measurements and calculations is achieved with a three-dimensional finite element model of the silo, representing the effective connection between the silo and the supporting structure. As the coupled three-dimensional calculation of turbulent wind flow around a group of silos is too demanding from the computational point of view, the structure is reduced to two dimensions using the finite strip method. Experimental results of available wind tunnel tests are used to validate this formulation; preliminary results for the steady state deformation of a cylinder under wind load are presented.