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Experimental Study of Wave Run-up on Semi-submersible Offshore Structures in Regular Waves

규칙파 중 반잠수식 해양구조물 주위의 런업에 관한 실험 연구

Kim, Namwoo;Nam, Bo Woo;Cho, Yoonsang;Sung, Hong Gun;Hong, Sa Young
김남우;남보우;조윤상;성홍근;홍사영

  • Received : 2013.10.22
  • Accepted : 2014.02.13
  • Published : 2014.02.28

Abstract

This paper presents the results of an experimental study of wave run-ups on a semi-submersible offshore structure. A series of model tests with a 1:80 scale ratio were carried out in the two-dimensional wave basin of MOERI/KIOST. The experimental model had two columns and one pontoon. The model was fixed and wave elevations were measured at five points per column. Two different draft (operational & survival) conditions and three wave heights were considered under regular wave conditions. First, the nonlinear characteristics of wave run-ups are discussed by using the time series data. Then, the wave heights are compared with numerical results based on the potential flow model. The comparison shows fairly good correlation between the experiments and computations. Finally, wave run-ups under the operational and survival conditions are suggested.

Keywords

Semi-submersible offshore structure;Run-up;model experiment;Regular wave

References

  1. Park, R.S., Kim, S.C., Kim, J.H., 1988. A Study on the Motion Responses and the Drift Forces of Semi-Submersible Drilling Rigs in the Damaged Condition. Journal of Ocean Engineering and Technology 27(4), 227-236
  2. Barltrop, N.D.P, 1998. Floating Structures: a guide for design and analysis. 1, Oilfield Publications, Houston, 1. 9-10.
  3. Hong, S.Y., Lee, P.M., Hong, D.C., 1989. A Study on the Slowly Varying Wave Drift Force Actin on a Semi-Submersible Platform in Waves. Journal of the Society of Naval Architects of Korea, 26(2), 49-63.
  4. Lee, D.Y., Lee, J.H., Kim, S.E., 2012. A Study of Non-linearity of Heave Motion in Waves. 2012 The Korean Associantion of Ocean Science and Technology Societies, Annual Conference, 119-124.

Acknowledgement

Grant : 해양구조물의 이송.설치를 위한 작업성능 평가기술 개발, 심해공학수조 운용을 위한 연구인프라 구축 및 심해플랜트 Pre-FEED 원천핵심기술개발

Supported by : 한국해양과학기술원, 한국해양과학기술진흥원