Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Effect of Plate-Shaped Structures on Wind Load Against Variation of Draft

해양 구조물의 흘수 변화에 따른 판형 구조물이 풍하중 추정에 미치는 영향

  • Yeon, Seong Mo (Korea Research Institute of Ships and Ocean Engineering) ;
  • Kwon, Chang Seop (Korea Research Institute of Ships and Ocean Engineering) ;
  • Kim, Yoo-Chul (Korea Research Institute of Ships and Ocean Engineering) ;
  • Kim, Kwang-Soo (Korea Research Institute of Ships and Ocean Engineering)
  • 연성모 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 권창섭 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 김유철 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 김광수 (한국해양과학기술원 부설 선박해양플랜트연구소)
  • Received : 2021.10.28
  • Accepted : 2021.11.29
  • Published : 2022.02.20
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Abstract

In this paper, wind load on a semi-submersible rig was investigated using Computational Fluid Dynamics (CFD). A maritime atmospheric boundary layer model for wind profile was implemented such that the wind profile shapes were retained throughout the computational domain. Wind load on the semi-submersible rig was calculated under the maritime atmospheric boundary layer and matched well with the results from wind tunnel test within a ±20% error. Overturning moments with variation of draft were investigated by decomposing into drag and lift components. It was observed that the contribution from lift to the overturning moments increased as the draft got higher. The majority of the lift components originated from deckbox which served as a lifting body due to the accelerated streamlines between waterline and the bottom of the deckbox.

Keywords

Acknowledgement

본 연구는 선박해양플랜트연구소 주요사업 "첨단 운송체의 항내 운항성능향상을 위한 축척효과를 고려한 운항제어원천기술 개발"로 수행된 연구결과입니다 (PES3860). 본 연구에 사용된 반잠수식 시추선은 Houston Offshore Engineering's Paired-Column Semisubmersible(PC-Semi)에서 파생된 모형임을 밝힙니다.

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