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Numerical analysis and validation of weakly nonlinear ship motions and structural loads on a modern containership

机译：现代集装箱船上的弱非线性船舶运动和结构载荷的数值分析和验证

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This paper aims to validate a numerical seakeeping code based on a 3D Rankine panel method by comparing its results with experimental data. Particularly, the motion response and hull-girder loads on a real modern ship, a 6500 TEU containership, are considered in this validation study. The method of solution is a 3D Rankine panel method which adopts B-spline basis function in the time domain. The numerical code is based on the weakly nonlinear scheme which considers nonlinear Froude-Krylov and restoring forces. The main focus of this study is given to investigate the nonlinear characteristics of wave-induced loads, and to validate this present scheme for industrial use in the range of low Froude number. The comparisons show that the nonlinear motions and hull-girder loads, computed by the present numerical code, have good overall agreements with experimental results. It is found that, for the better accuracy of computational results, particularly at extreme waves in oblique seas, the careful treatment of soft-spring (or compatible) system is recommended to the control of non-restoring motions such as surge, sway, and yaw.
机译：本文旨在通过将其结果与实验数据进行比较来验证基于3D Rankine面板方法的数值航海代码。特别是，在此验证研究中考虑了真实的现代船舶（6500 TEU集装箱船）上的运动响应和船体梁负载。解决的方法是在时域中采用B样条基函数的3D Rankine面板方法。数值代码基于弱非线性方案，其中考虑了非线性Froude-Krylov和恢复力。这项研究的主要重点是研究波浪感应载荷的非线性特性，并验证该方案在低弗洛德数范围内的工业应用。比较表明，由本数字代码计算出的非线性运动和船体梁荷载与实验结果具有良好的总体一致性。已经发现，为了获得更好的计算结果准确性，尤其是在斜海中的极端波浪时，建议对软弹簧（或兼容的）系统进行仔细的处理，以控制诸如浪涌，摇摆和晃动的非恢复运动。偏航。

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