Ocean and Polar Research

Korea Institute of Ocean Science & Technology (한국해양과학기술원)
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Arrangement Plan of Buoyancy Modules for the Stable Operation of the Flexible Riser in a Deep-Seabed Mining System

심해저 채광 시스템에서 유연관의 안정적인 운용을 위한 부력재 배치 설계

  • Oh, Jae-Won (Department of Mechanical Engineering, College of Engineering, Hanyang University) ;
  • Min, Cheon-Hong (Korea Research Institute of Ships & Ocean Engineering, KIOST) ;
  • Lee, Chang-Ho (Korea Research Institute of Ships & Ocean Engineering, KIOST) ;
  • Hong, Sup (Korea Research Institute of Ships & Ocean Engineering, KIOST) ;
  • Bae, Dae-Sung (Department of Mechanical Engineering, College of Engineering, Hanyang University) ;
  • Lim, Jun-Hyun (Department of Mechanical Engineering, College of Engineering, Hanyang University) ;
  • Kim, Hyung-Woo (Korea Research Institute of Ships & Ocean Engineering, KIOST)
  • 오재원 (한양대학교 공과대학 기계공학과) ;
  • 민천홍 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 이창호 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 홍섭 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 배대성 (한양대학교 공과대학 기계공학과) ;
  • 임준현 (한양대학교 공과대학 기계공학과) ;
  • 김형우 (한국해양과학기술원 부설 선박해양플랜트연구소)
  • Received : 2014.08.27
  • Accepted : 2015.02.09
  • Published : 2015.06.30
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Abstract

This paper focuses on the efficient arrangement plan of buoyancy modules, which plan is used to secure the safe operation and structural stability of a marine riser. The marine riser is connected between a vessel and seabed devices. The movement of the vessel and the seabed devices are affected by the motion of the riser. The riser of a deep-seabed integrated mining system exerts a strong influence on the healthy transfer of minerals. So, buoyancy modules must be equipped to compensate for the problem which is the structure stability and the dynamic motion. Installation locations and quantities of the buoyancy modules are determined by real sea experiments. But this is not easy to do because in real sea experimental conditions the cost is expensive as well as being, time-consuming and dangerous. Therefore, the locations and quantities should be determined by numerical simulation. This method is called simulation-based design. The dynamic analysis models of the riser and the buoyancy modules are built into the commercial software of DAFUL.

Keywords

References

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