Numerical analysis of vortex shedding
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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.
Master's thesis in Structural engineering