터렛 계류된 LNG-FSRU의 극한 계류 해석
Extreme Mooring Analysis of Turret Moored LNG-FSRU
0
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
In this study, hydrodynamic and mooring analysis for LNG FSRU moored by an internal turret with 9 mooring lines are numerically performed using commercial softwares, Hydrostar and Ariane. Met-ocean combinations for screening method are taken from wave governed condition(BV Rule Note NR 493) with relative heading between wave and wind between -45° and +45° and relative heading between wind and current between -30° and +30°. Extreme mooring analysis and sensitivity analysis are performed for intact and damaged (=one line missing) conditions and the parameters for sensitivity analysis are wave peak period, peak enhancement factor and line pretension. In the viewpoint of the design tension in mooring line, chain diameter is designed to satisfy safety factor for each conditions. As the chain diameter is increased from 152mm to 171mm, the designtension is reduced while the minimum breaking load is increased.
Abstract
In this study, hydrodynamic and mooring analysis for LNG FSRU moored by an internal turret with 9 mooring lines are numerically performed using commercial softwares, Hydrostar and Ariane. Met-ocean combinations for screening method are taken from wave governed condition(BV Rule Note NR 493) with relative heading between wave and wind between -45° and +45° and relative heading between wind and current between -30° and +30°. Extreme mooring analysis and sensitivity analysis are performed for intact and damaged (=one line missing) conditions and the parameters for sensitivity analysis are wave peak period, peak enhancement factor and line pretension. In the viewpoint of the design tension in mooring line, chain diameter is designed to satisfy safety factor for each conditions. As the chain diameter is increased from 152mm to 171mm, the designtension is reduced while the minimum breaking load is increased.
참고문헌 (9)
- Bureau Veritas, "Rule Note NR 493 DT R02E-Classification of Mooring Systems for Permanent Offshore Units", Bureau Veritas, ~ (2012)
- Cho, S.K., "Study on the dynamics of turret moored FSRU in waves", Proceedings of the International Society of Offshore and Polar Engineers(ISOPE) Pacific, 2010, 28~33
- 조석규, "터렛 계류된 부유체의 과대 선수동요에 관한 실험 연구", 대한조선학회 논문집, 50(1), pp.8~13 (2013), 대한조선학회
- 정준모, "부유식 복합 재생에너지 플랫폼 계류선의 효과적 배치에 관한 연구", 한국해양공학회지, 27(4), pp.22~32 (2013), 한국해양공학회
- 정준모, "제주 해양환경에 적합한 부유식 해상풍력발전기 계류선 설계", 대한조선학회 논문집, 51(4), pp.300~310 (2014), 대한조선학회
- 홍장표, "터렛 계류된 FPSO의 운동응답 및계류선 손상 시 거동 특성에 대한 실험적 연구", 한국해양공학회지, 29(3), pp.231~240 (2015), 한국해양공학회
- 이동엽, "터렛 위치에 따른 FPSO 거동 및 계류시스템 특성에 대한 실험 연구", 한국해양공학회지, 29(2), pp.143~153 (2015), 한국해양공학회
- Lee, K.W., "Study on ship motion analysis of turret-moored LNG FSRU compared with experiment", Proceedings of the International Society of Offshore and Polar Engineers(ISOPE) Pacific, 2010, 5~9
- 임유창, "FPSO 다점 계류 시스템의 최적 설계 연구", 한국해양공학회지, 23(6), pp.61~66 (2009), 한국해양공학회