Abstract A numerical model based on WCSPH method is utilized to simulate wave propagation over a pipeline. A hybrid approach is introduced to absorb outgoing waves based on gradual decrease of fluid velocity in an absorbing layer and using sloping beds simultaneously. The interaction of both regular and irregular waves with pipelines located on porous and impermeable sea-beds has been studied. The effect of pipeline distance to sea-bed on flow pattern and on the applied force is investigated for different geometries of pipeline protection by porous media and side slopes. Irregular wave spectra are studied and the model has been verified in comparison with other numerical and experimental data. The developed model simulates accurately the interaction of waves and a pipeline placed on a porous or an impermeable sea-bed, showing that forces on pipelines on permeable sea-beds are completely different than on impermeable sea-beds.

中文翻译：

---

使用 SPH 数值模型研究多孔和不透水层上受保护海底管道的波浪力

摘要 一种基于WCSPH方法的数值模型被用来模拟波浪在管道上的传播。基于吸收层中流体速度的逐渐降低并同时使用斜床，引入了一种混合方法来吸收出射波。已经研究了规则波和不规则波与位于多孔和不渗透海床上的管道的相互作用。针对不同几何形状的多孔介质和边坡保护管道，研究了管道到海床的距离对流动模式和作用力的影响。研究了不规则波谱，并与其他数值和实验数据进行了比较，验证了该模型。开发的模型准确地模拟了波浪与放置在多孔或不透水海床上的管道的相互作用，