FLNG系统进行旁靠卸载作业时的水动力性能研究

Research on hydrodynamics of an FLNG system in side-by-side operation

针对大型浮式液化天然气(FLNG)系统与液化天然气(LNG)运输船以旁靠方式进行LNG卸载时的船体的水动力性能开展了水池模型试验。实验全面考虑了近靠物体之间的水动力耦合,以及船体与系泊系统及连接系统之间的耦合。通过水池模型实验得到了在风、浪、流共同作用下FLNG船体的运动响应情况、FLNG与LNG运输船间的相对运动情况、系泊系统的受力情况、两船之间连接系统的受力情况。借助统计分析手段对实验数据进行分析研究,讨论了FLNG进行旁靠卸载作业时的水动力性能。

This study presented the hydrodynamics of a Floating Liquefied Natural Gas （FLNG） system in side-by-side offloading operation with a LNG carrier in parallel arrangement with the FLNG vessel. The coupled hydrodynamics of multiple bodies,and the coupled effects of ship motion and mooring system were included in the model test. Motion responses of the FLNG vessel under the combination of the wind, current and waves were obtained, together with the relative motion responses between the FLNG vessel and the LNG carrier, the loads acting on the mooring system and the loads acting on the connection system. Statistical and spectral analyses were carried out for these measured data. The hydrodynamics of the FLNG system under the side-by-side offloading operation were discussed.