Dynamic response of oscillating flexible risers under lock-in events

Carlos Alberto Riveros, Tomoaki Utsunomiya, Katsuya Maeda, Kazuaki Itoh

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A highly nonlinear response and a self-regulated process are usually associated with the dynamic response of a flexible riser. In addition, the formation of vortices shedding from the riser related to Vortex-Induced Vibration (VIV) may adversely affect its structural integrity. In this paper a response prediction model for oscillating flexible risers is presented. It is based on the Finite Element Method (FEM) and a harmonic model for the prediction of the cross-flowf orces. An increased mean drag coefficient model and amplitude-dependent lift coefficients are also considered. The simulation results are compared with experimental data obtained from a 35-m riser model. Good agreement in amplitude response is observed in these comparisons.

Original languageEnglish
Pages (from-to)23-30
Number of pages8
JournalInternational Journal of Offshore and Polar Engineering
Volume19
Issue number1
Publication statusPublished - Mar 1 2009
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Ocean Engineering
  • Mechanical Engineering

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