Numerical analysis of vortex shedding
Master thesis
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http://hdl.handle.net/11250/182738Utgivelsesdato
2010Metadata
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Sammendrag
This report deals with structural vibrations of wind exposed structures caused by the vortex
shedding phenomena. The theory of vortex shedding and the field of study called aeroelastisity
are presented.
A case study of a light mast structure has been used as a study of the vortex shedding
phenomena. Numerical simulations of vortex shedding have been performed through the
use of Computational Fluid Dynamics (CFD). The aerodynamic flow around an U-section
suiceptable to vortex-induced vibrations has been evaluated. Three different aerodynamic
supression devices for vortex-induced vibrations have been presented and discussed.
An attempt was also made to perform Fluid-Structure Interaction (FSI) analysis. But as
computational stability problems were encountered, these attempts were not successful.
Beskrivelse
Master's thesis in Structural engineering