아티큘레이티드 타워 형태의 부이 구조물에 관한 파랑 중 운동응답 및 앵커 지지력에 관한 모형시험 연구
Model Test on Motion Responses and Anchor Reaction Forcesof an Articulated Tower-Type Buoy Structure in Waves
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초록
A series of model tests was performed to evaluate the survivability of an articulated tower-type buoy structure under harsh environmental conditions. The buoy structure consisted of three long pipes, a buoyancy module, and top equipment. The scale model was made of acrylic pipe and plastic with a scale ratio of 1/22. The experiments were carried out at the ocean engineering basin of KRISO. The performance of the buoy structure was investigated under waves only and under combined environmental conditions from sea state (SS) 5 to 7. A nonlinear time-domain numerical simulation was conducted using the mooring analysis program OrcaFlex. The survivability of the buoy was analyzed based on three factors: the pitch motion, submergence of the top structure, and anchor reaction force. The model test results were directly compared to the results of numerical simulations. The effects of the sea state and combined environment on the performance of the buoy structure were investigated.
Abstract
A series of model tests was performed to evaluate the survivability of an articulated tower-type buoy structure under harsh environmental conditions. The buoy structure consisted of three long pipes, a buoyancy module, and top equipment. The scale model was made of acrylic pipe and plastic with a scale ratio of 1/22. The experiments were carried out at the ocean engineering basin of KRISO. The performance of the buoy structure was investigated under waves only and under combined environmental conditions from sea state (SS) 5 to 7. A nonlinear time-domain numerical simulation was conducted using the mooring analysis program OrcaFlex. The survivability of the buoy was analyzed based on three factors: the pitch motion, submergence of the top structure, and anchor reaction force. The model test results were directly compared to the results of numerical simulations. The effects of the sea state and combined environment on the performance of the buoy structure were investigated.
참고문헌 (5)
- Berteanx, H. O., "Buoy Engineering" (1976), Woods Hole Oceanographic Institution
- Carpenter, E. B., "Experimental and Numerical Investigations of Tetherd Spar and Sphere Buoys in Irregular Waves", Ocean Engineering, 22(8), pp.765~784 (1995)[DOI]
- Ma, C., "Sub-harmonic Motion of a Buoy Tethered to Seabed", Proceedings of the 25th International Offshore and Polar Engineering Conference, pp.316~323 (2015)
- 이건호, "부이 형상에 따른 부이줄 장력의 차이", 수산해양기술연구, 50(3), pp.233~243 (2014), 한국수산해양기술학회[DOI]
- Park, H. I., "Characteristic Analysis of Ocean Observation Buoys for Application to Seas around Korea Peninsula", Proceedings of the Korean Society for Marine Environment and Energy, pp.267~273 (2003)