CAJ | 학술논문

介绍了170 000 m3穿梭液化天然气船旁靠250 000 m3浮式天然气储卸装置的运动计算及响应分析.采用三维线性零航速频域理论结合引入两船间自由液面能量耗散系数的方法预报船体的运动性能,分析了旁靠时两船之间的相互效应对固有周期、两船间运动、波浪的遮蔽效应等影响:两船旁靠情况下,小船的固有周期会略有减小;将两船旁靠和仅小船单船的运动情况做比较,单船的运动幅值介于两船旁靠时无遮蔽和遮蔽水域之间的运动幅值;两船旁靠,对大船的运动影响小,对小船的运动影响大,在波浪频率 1.0(°)/s 附近会出现峰值;受大船遮蔽效应的影响,小船在遮蔽水域运动幅值大部分小于无遮蔽水域的运动幅值.因此,从船体运动性能角度出发,在旁靠作业时,建议小船从受大船遮蔽的水域靠近大船较好.
개소료170 000 m3천사액화천연기선방고250 000 m3부식천연기저사장치적운동계산급향응분석.채용삼유선성령항속빈역이론결합인입량선간자유액면능량모산계수적방법예보선체적운동성능,분석료방고시량선지간적상호효응대고유주기、량선간운동、파랑적차폐효응등영향:량선방고정황하,소선적고유주기회략유감소;장량선방고화부소선단선적운동정황주비교,단선적운동폭치개우량선방고시무차폐화차폐수역지간적운동폭치;량선방고,대대선적운동영향소,대소선적운동영향대,재파랑빈솔 1.0(°)/s 부근회출현봉치;수대선차폐효응적영향,소선재차폐수역운동폭치대부분소우무차폐수역적운동폭치.인차,종선체운동성능각도출발,재방고작업시,건의소선종수대선차폐적수역고근대선교호.
This paper introduces the motion calculation and response analysis when a 170000m3 LNG shuttle tanker is moored side-by-side to a 250000m3 floating LNG storage unit. A free surface energy dissipation coefficient between the two ships is introduced into the 3D linear zero forward speed frequency domain theory to predict ship motion performance. The mutual interaction effect between the two side-by-side vessels on the natural period, the motions of each ship, and the wave shielding effect are analyzed: for the side-by-side case, the natural period of the smaller vessel will be slightly decreased; through the comparison between side-by-side case and the single smaller vessel case, the single vessel motion amplitudes lie in between the case of side-by-side without shielding and side-by-side with shielding; the side-by-side operation has little influence on the motion of the bigger vessel, but has large influence on the smaller vessel, which appears to have a peak around wave frequency 1.0(°)/s. Due to the shielding effect of the bigger vessel, the motion amplitudes of the smaller vessel are smaller than in the non-shielded water regions in most cases. Therefore, from the ship motion point of view, during the side-by-side operation, it is suggested that the smaller vessel shall approach to the bigger vessel from its shielded side.