Dynamic response of oscillating flexible risers under lock-in events

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

Research output: Contribution to journalArticle

7 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

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Dynamic response
Vortex shedding
Drag coefficient
Structural integrity
Vortex flow
Finite element method

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Ocean Engineering
  • Mechanical Engineering

Cite this

Dynamic response of oscillating flexible risers under lock-in events. / Riveros, Carlos Alberto; Utsunomiya, Tomoaki; Maeda, Katsuya; Itoh, Kazuaki.

In: International Journal of Offshore and Polar Engineering, Vol. 19, No. 1, 01.03.2009, p. 23-30.

Research output: Contribution to journalArticle

Riveros, Carlos Alberto ; Utsunomiya, Tomoaki ; Maeda, Katsuya ; Itoh, Kazuaki. / Dynamic response of oscillating flexible risers under lock-in events. In: International Journal of Offshore and Polar Engineering. 2009 ; Vol. 19, No. 1. pp. 23-30.
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