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Effect of vortex induced vibration on a paired-column semisubmersible platform

Research output: Contribution to journalJournal article

Published
Article number1540019
<mark>Journal publication date</mark>12/2015
<mark>Journal</mark>International Journal of Structural Stability and Dynamics
Issue number8
Volume15
Number of pages22
Publication StatusPublished
Early online date8/04/15
<mark>Original language</mark>English

Abstract

This paper describes a numerical study of the effect of vortex induced movement (VIM) on the hull of a paired-column semisubmersible (pc-semi) platform in relation to the column geometric properties. A computational fluid dynamics (CFD) analysis was carried out and vortex shedding was observed. The response of the square and rectangular columns hull configuration was investigated using ANSYS AQWA and the maximum amplitude was observed to be almost the same for both geometry, but it occurred at different range of reduced velocity V-tau. The effect of surface wave and flow incidence angle were investigated for extreme and regular weather conditions, and it was found that VIM occurred at 2