Numerical study of the vortex-induced vibration of a riser taking into account the variation of the tension

Xiangxi Han, Weidong Ruan, Jian Gu, Youhong Tang, Zhanbin Meng, Di Ren, Jiaming Wu

Research output: Contribution to journalArticlepeer-review

Abstract

Previous studies of the marine riser VIV have primarily considered the constant values of the tension, but limited work has been done to consider the variations of the tension with riser vibrations. In addition, previous studies have mainly focused on the effect of the inflow velocity profile on a riser VIV, while a study of a riser VIV at a wide range of velocities is still lacking. This study presents a model that can take into account the variation of the tension with riser vibrations. The VIV characteristics of the riser were investigated based on the fluid-structure coupling methods. It is shown that the model that takes into account the variation of the tension is able to accurately capture the bimodal character of the amplitude-ratio curve and the vortex shedding pattern, and to calculate the vibration frequencies accurately.

Original languageEnglish
Pages (from-to)907-921
Number of pages15
JournalShips and Offshore Structures
Volume18
Issue number6
DOIs
Publication statusPublished - 2023

Keywords

  • flexible riser
  • large deformation
  • tension variation
  • Vortex-induced vibration

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