Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Study on Optimum Design of FPSO Spread Mooring System

FPSO 다점 계류 시스템의 최적 설계 연구

  • Lim, Yu-Chang (Dept., of Naval Architecture & Ocean Engineering, Inha University) ;
  • Kim, Kyung-Su (Dept., of Naval Architecture & Ocean Engineering, Inha University) ;
  • Choung, Joon-Mo (Dept., of Naval Architecture & Ocean Engineering, Inha University) ;
  • Kim, Jae-Woo (Dept., of Naval Architecture & Ocean Engineering, Inha University) ;
  • Kim, Jin-Tae (Structure Group 2, Daewoo Shipbuilding & Marine Engineering Co. Ltd.) ;
  • Yeo, Seung-Hoon (Dept., of Naval Architecture & Ocean Engineering, Inha University)
  • 임유창 (인하대학교 선박해양공학과) ;
  • 김경수 (인하대학교 선박해양공학과) ;
  • 정준모 (인하대학교 선박해양공학과) ;
  • 김재우 (인하대학교 선박해양공학과) ;
  • 김진태 (대우조선해양(주) 구조기본그룹2) ;
  • 여승훈 (인하대학교 선박해양공학과)
  • Published : 2009.12.31
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Abstract

For a spread-moored FPSO (Floating Production, Storage, & Off-loading) subjected to environmental excitation from waves, current, and wind, a procedure to determine optimum length and stiffness of mooring lines is suggested using quasi-static frequency domain response analyses. Coupled relations between design parameters are closely examined. In consideration of this, optimized design parameters are proposed based on minimum weight condition. The initial design parameters for numerical analyses are calculated using the static catenary equation of mooring lines. It is demonstrated the line tension and vessel's offset are influenced by the mooring line length and stiffness. Accordingly it is suggested the optimum vessel's offset range should be determined considering line fatigue damage. The availability and limitation of the application of quasi-static analysis method for spread mooring system are explained by comparing the result of time domain analysis with one of frequency domain analysis.

Keywords

References

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