Journal of Coastal Disaster Prevention (한국연안방재학회지)

Korean Society of Coastal Disaster Prevention (한국연안방재학회)
권호 표지

A Comparison of Dynamic Analysis for the Flexible Riser in Shallow Water

천해에서 유연라이저의 동적해석 결과 비교

  • Jo, Chul-Hee (Department of Naval architecture and Ocean Engineering, Inha University) ;
  • Kim, Do-Youb (Department of Naval architecture and Ocean Engineering, Inha University) ;
  • Rho, Yu-Ho (Department of Naval architecture and Ocean Engineering, Inha University) ;
  • Kim, In-Ho (Department of Ocean Construction Engineering, Kangwon National University)
  • 조철희 (인하대학교 조선해양공학과) ;
  • 김도엽 (인하대학교 조선해양공학과) ;
  • 노유호 (인하대학교 조선해양공학과) ;
  • 김인호 (강원대학교 해양건설공학과)
  • Received : 2014.10.06
  • Accepted : 2012.10.21
  • Published : 2014.10.31

⟨ Previous Next ⟩

Abstract

Flexible risers have been used extensively in recent years for floating and early production systems. Such risers offer the advantage of having inherent heave compliance in their catenary thereby greatly reducing the complexity of the riser-to-rig and riser-to subsea interfaces. Another advantage with flexible risers is their greater reliability. Concerns about fatigue life, gas permeation and pigging of lines have been overcome by extensive experience with these risers in production applications. In this paper, flexible riser analysis results were compared through coupled and uncoupled dynamic analyses methods. A time domain coupled analysis capability has been developed to model the dynamic responses of an integrated floating system incorporating the interactions between vessel, moorings and risers in a marine environment. For this study, SPM (Single Point Mooring) system for an FSU in shallow water was considered. This optimization model was integrated with a time-domain global motion analysis to assess both stability and design constraints of the flexible riser system.

Keywords

Acknowledgement

This work was supported by the Technology Innovation Program funded By the Ministry of Trade, industry & Energy(MI, Korea). The authors grateful to INHA University for the funding research grant.