Journal of Wind Energy (풍력에너지저널)

Korea Wind Energy Association (한국풍력에너지학회)
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A Study on the Global Motion Performance of Floater and Mooring Due to Arrangement of Detachable Mooring System

탈착형 계류시스템 배치에 따른 부유식 해양구조물의 운동 및 계류성능에 관한 연구

  • Kangsu Lee ;
  • Hyun-Sung Kim ;
  • Byoung Wan Kim
  • 이강수 (한국해양과학기술원 부설 선박해양플랜트연구소 과학기술연합대학원대학교 선박해양공학스쿨) ;
  • 김현성 (삼성중공업 조선해양연구소) ;
  • 김병완 (한국해양과학기술원 부설 선박해양플랜트 연구소, 과학기술연합대학원대학교 선박해양공학스쿨)
  • Received : 2023.03.14
  • Accepted : 2023.04.20
  • Published : 2023.06.30
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Abstract

In this study, the global response characteristics of floater and mooring for floating offshore wind turbine with a detachable mooring system are performed. Global motion and structural response result extracted from the coupled motion analysis of 10MW DTU floating offshore wind turbine with detachable mooring system modeled by high-order boundary element model and finite element mesh, were used to study the characteristics of tension on mooring lines subjected to three different types of ocean loads. Breaking limit of mooring line characterized by wind, current and wave load has a major effect on the distribution of mooring tension found in time domain analysis. Based on the numerical results of coupled motion analysis, governing equation for calculating the motion response of a floater under ocean loads, and excitation force and surge motion and tension respectively are presented using excursion curve. It is found that the response of floater is reliable and accurate for calculating the tension distributions along the mooring lines under complex loadings. This means that the minimun breaking limit of mooring system satisfied a design criteria at ultimate ocean environmental loading condtions.

Keywords

Acknowledgement

본 연구는 산업통상자원부 신재생에너지핵심기술개발사업 (한국에너지기술평가원-풍력분야)의 지원으로 'MW급 부유식 해상풍력 탈착형 계류시스템 개발(과제번호: 20213000000030, 계정번호: PNS4560)'과제에서 수행된 연구결과 중 일부임을 밝히며, 연구비 지원에 감사드립니다.

References

  1. Hong SY, Kim JH, Cho SK, Choi YR, and Kim YS, 2005, "Numerical and experimental study on hydrodynamic interaction of side-by-side moored multiple vessels". Ocean Engineering Vol. 32, pp 783-801
  2. Bak, Christian, 2013, "The DTU 10-MW Reference Wind Turbine", Denmark Technical University
  3. Kim BW, Sung HG, Kim JH, and Hong SY, 2013, "Comparison of linear spring and nonlinear FEM methods in dynamic coupled analysis of floating structure and mooring system". Journal of Fluids and Structures Vol. 42, pp 205-227.
  4. Newman JN, 1985, Algorithms for the free-surface Green function", Journal of Engineering Mathematics Vol. 19, 57-67.
  5. Choi YR, Hong SY, and Choi HS, 2005, "An analysis of second-order wave forces on flowing bodies by using a higher-order boundary element method", Ocean Engineering Vol. 32, 117-138
  6. Park HJ, Kim JS, and Nam BW, 2023, "Numerical Analysis for Motion Response of Modular Floating Island in Waves", Journal of Ocean Engineering and Technology Vol. 37(1), pp.8-19
  7. IEC, 2019, Design Requirements for Floating Offshore Wind Turbines, p. 26~27.
  8. DNV-GL, 2018, Floating wind turbine structures, p. 126-136.
  9. Kim MJ and Shin HK, 2020, "A Study on Environmental Conditions for the Estimation of Stability of Floating Offshore Wind Turbine Systems", Journal of Wind Energy Vol. 11(4) pp.5-11
  10. Nam HS, Park DM, Cho SK, and Hong SY, 2022, "Analysis of Relative Wave Elevation Around Semi-submersible Platform Through Model Test: Focusing on Comparison of Wave Probe Characteristics", Journal of Ocean Engineering and Technology Vol. 36(1), pp.1-10