터렛 계류된 부유체의 과대 선수동요에 관한 실험 연구
Experimental Study of Excessive Yaw Motion of Turret Moored Floating Body
2
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
Excessive yaw motion of a turret moored vessel was examined in this paper. The vessel was moored by an internal turret and catenary mooring lines. The experiments were conducted in regular waves. Turret moored vessel can oscillate from side to side or move to one particular direction, and eventually exhibit large yaw motion. The results showed that the excessive yaw occured for specific condition,ratio of wave lengths and vessel length. It was found that turret moored floating vessel was unstable for regular wave period from 14to 18 sec and excessive yaw occurred to maximum 50 deg. The time series, trajectory, phase plot and qualitative analysis are performed. The analysis showed that the results of experiments agreed with the that of analytic method and the excessive yaw could be predicted by the stability analysis.
Abstract
Excessive yaw motion of a turret moored vessel was examined in this paper. The vessel was moored by an internal turret and catenary mooring lines. The experiments were conducted in regular waves. Turret moored vessel can oscillate from side to side or move to one particular direction, and eventually exhibit large yaw motion. The results showed that the excessive yaw occured for specific condition,ratio of wave lengths and vessel length. It was found that turret moored floating vessel was unstable for regular wave period from 14to 18 sec and excessive yaw occurred to maximum 50 deg. The time series, trajectory, phase plot and qualitative analysis are performed. The analysis showed that the results of experiments agreed with the that of analytic method and the excessive yaw could be predicted by the stability analysis.
참고문헌 (8)
- Bernitsas, M.M., "Stability of Single Point Mooring Systems", Applied Ocean Research, 8(1), pp.49~58 (1986)
- Chillamcharla, G.K., "Mooring analysis of a weathervaning FPSO in Bi-directional sea state", 28th Internaitonal Conference on Ocean, Offshore and Artic Engineering (2009)
- "ITTC-Recommended Procedures and Guidelines: 7.5-02 07-03.2", ITTC, ~ (2002)
- Cho, S. K., "A study on the motion behaviour of side-by-side moored two floaters including sloshing effects", 박사, pp.2012
- Kaalstad, J.P., "Submerged turret loading buoy based offshore gas receiving terminals for LNG and CNG", Offshore Technology Conference (2004)
- Lee, D.H., "A Stability Analysis of Tandem Offloading Systems at Sea", Journal of Marine Science and Technology, 10(2), pp.53~60 (2005)
- Munipalli, J., "Effect of wave steeoness on yaw motions of a weathervaning floating platform", 16th Australasian Fluid Mechanics Conference, pp.1007~1011 (2007)
- Yadav, A., "Parametric study of yaw instability of a weathervaning platform", 16th Australasian Fluid Mechanics Conference, pp.1012~1015 (2007)