Abstract This paper presents an investigation on the symmetric motions and loads of the S-175 containership undergoing severe green water impact that may result in high frequency whipping. Symmetric dynamic response results from two Flexible Fluid Structure Interaction approaches, namely one- and two-way coupling methods are assessed and compared in regular head waves. Numerical computations are performed by coupling CFD (Star-CCM+) and FEA (Abaqus). The creative meshing strategy adopted for RANS CFD simulations is presented and numerical predictions are compared against experimental measurements over a range of wave frequencies. It is concluded that heave, pitch and the linear wave frequency component in the wave loads are predicted well by the two approaches. However, overall two-way coupling compares better with measurements and a significant difference between the two different methods is especially noted in the high-frequency whipping domain. It is concluded that one-way coupling underestimates the high-frequency vibratory components and therefore care must be enforced when applying this method for calculating hydroelastic responses in waves.

中文翻译：

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用于预测集装箱船在波浪中的对称响应的非线性单向和双向 FFSI 方法的比较

摘要 本文研究了 S-175 集装箱船在遭受可能导致高频鞭打的严重绿水冲击时的对称运动和载荷。两种柔性流体结构相互作用方法的对称动力响应结果，即单向和双向耦合方法在规则头波中进行了评估和比较。数值计算是通过耦合 CFD (Star-CCM+) 和 FEA (Abaqus) 来执行的。提出了用于 RANS CFD 模拟的创造性网格划分策略，并将数值预测与一系列波频率上的实验测量值进行比较。结论是两种方法都可以很好地预测波浪载荷中的升沉、纵摇和线性波浪频率分量。然而，整体双向耦合与测量相比更好，两种不同方法之间的显着差异在高频鞭打域中尤为明显。结论是单向耦合低估了高频振动分量，因此在应用这种方法计算波浪中的水弹性响应时必须小心。