The current study tries a new approach to simulating interactions between waves and seagrass through Smoothed Particle Hydrodynamics (SPH). In this model, the plants are defined as a solid that respects Hooke's law, and are assumed to have direct interaction with the fluid. Given the characteristics of the SPH method, especially in terms of computational time, the dimensions of the simulations were limited. The first goal of the current study was to optimize the approach to avoid reaching certain limits such as the rupture of the simulated plant. Plant movements under waves and/or currents have been studied by several authors in various in-situ, physical, and numerical experiments concerning various vegetation species, thus proving that plant movements can be successfully reproduced by SPH 2D/3D. Manning's roughness coefficient, n, was calculated to confirm that the results were in accordance with what had been measured in flume studies. Even though there is still room for improvement, it is shown that this method can be used to estimate Manning's coefficient for coastal vegetation (seagrass and saltmarsh vegetation) and to greatly improve the modeling and forecasting of coastal erosion and storm surge risks by including the effects of vegetation in integrated models.

当前的研究尝试了一种通过平滑粒子流体动力学 (SPH) 模拟波浪和海草之间相互作用的新方法。在该模型中，植物被定义为遵守胡克定律的固体，并假定与流体直接相互作用。鉴于 SPH 方法的特点，特别是在计算时间方面，模拟的维度是有限的。当前研究的第一个目标是优化方法以避免达到某些限制，例如模拟工厂的破裂。几位作者已经在各种原位研究了波浪和/或水流下的植物运动关于各种植被物种的物理和数值实验，从而证明 SPH 2D/3D 可以成功地再现植物运动。计算曼宁粗糙度系数n以确认结果与水槽研究中测量的结果一致。尽管仍有改进的空间，但表明该方法可用于估计沿海植被（海草和盐沼植被）的曼宁系数，并通过包括影响来极大地改进沿海侵蚀和风暴潮风险的建模和预测综合模型中的植被。