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Numerical investigation of dynamic soil response around a submerged rubble mound breakwater

机译：淹没式碎石堤防波堤周围土壤动力响应的数值研究

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A better understanding of physical process of the fluid-seabed-structure interaction (FSSI) is beneficial for engineers involved in the design of marine infrastructures. Most previous studies for the problem of FSSI have considered wave-only conditions, despite the co-existence of wave and current in the real ocean environment. Unlike the previous studies, currents are included in the present study for the numerical modelling of FSSI, using an integrated FVM-FEM scheme, in which the VARANS equation is used to simulate fluid field, while Biot's poroelastic model is used for porous flow in a seabed. Numerical examples show the important influences of currents on the local hydrodynamic process and the resulting dynamics of seabed foundation around a submerged rubble mound breakwater. The structure is relatively stable in the presence of counter-current waves, whereas the co-current waves would significantly compromise the instability of structure due to potential of shear failure and liquefaction in its sandy seabed foundation.
机译：对流体-海床-结构相互作用（FSSI）的物理过程的更好理解对于参与海洋基础设施设计的工程师是有益的。尽管在实际的海洋环境中波浪和水流并存，但大多数关于FSSI问题的研究都只考虑了波浪条件。与以前的研究不同，本研究采用集成的FVM-FEM方案将电流包括在FSSI的数值模型中，其中VARANS方程用于模拟流场，而Biot的孔隙弹性模型用于在管道中进行多孔流动。海底。数值算例表明了水流对局部水动力过程的重要影响以及淹没的碎石丘防波堤周围海床基础的动力学特性。该结构在存在逆流波的情况下相对稳定，而并流波将极大地损害结构的不稳定性，这是由于其沙质海床基础中的剪切破坏和液化的可能性。

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