基于AQWA的旁靠油轮水动力相互作用研究

摘要

船舶旁靠系统的水动力响应是一个非常复杂的工程问题,系统中每一个结构的动力响应会受到其他结构的耦合影响.针对两旁靠FPSO和LNG运输船组成的旁靠系泊系统,基于三维势流理论,应用多体水动力学软件AQWA,在考虑两船间水动力相互作用的情况下,计算两旁靠船舶所受到的波浪载荷,并与不考虑两船水动力相互作用的计算结果进行对比分析.结果表明,旁靠系泊系统水动力相互作用是不可忽略的.同时也分析了不同旁靠间距对水动力性能的影响,结果发现旁靠间距只在中高频段时对水动力性能的影响较大.研究结果可为旁靠系统系泊方案的设计和研究提供一定的参考.%The hydrodynamic response of the side-by-side mooring system is a very complex problem, the hydrodynamic response of each structure will be coupled of other structures. This paper takes the side-by-side mooring system as the research objects. With consideration of the effect of hydrodynamic interaction, the global hydrodynamic response of the side-by-side mooring system between a FPSO and a LNG carrier is calculated by using multi-body hydrodynamic software AQWA, based on the three-dimensional potential theory. The results obtained are compared with those regardless of hydrodynamic interaction. It is shown that the hydrodynamic interaction can not be ignored. And then, the impact on hydrodynamic performance caused by the spacing of two ships is studied, the results show that it has a greater effect to hydrodynamic performance in the middle and high frequency range. The analysis results can be helpful for the design and study of mooring.