For the purpose of this paper, the in-house large-eddy simulation code, Hydro3D, is refined to study wave structure interaction. First of all, the code is used to develop a numerical wave tank capable of simulating accurately the generation, progression and damping of solitary waves in a tank. Then, Hydro3d is employed to simulate a previous laboratory experiment of a wave propagating over an infinitely wide flat plate. The code’s accuracy is validated by comparing computed waterlevels and hydrodynamic forces on the plate with measured data for which good agreement is found for a number of conditions (i.e. varying wave steepness or plate submergence, respectively). Then the study is extended to investigate three-dimensional effects for which the infinitely wide plate is replaced by a finite square plate. It is found that the pressure difference between the lower and upper side of the plate drives a span-wise flow and creates unique flow structures and water-surface fluctuations near the plate due to the three-dimensionality of the problem. A further three-dimensional study is conducted for which the finite plate is fixed at an angle of attack in respect to the incident wave and variations in hydrodynamic forces and free-surface elevations are computed. Both vertical and horizontal forces are reduced when the plate is fixed at ${45}^{\circ }$ degrees and minor water-level fluctuations appear, reflecting the pattern of the rotational flow near the plate edges. Plots of the velocity vectors, swirl-strength, pressure and wave elevation and acting forces reveal significant differences between an infinitely wide and a finite square plate subjected to a solitary wave.

出于本文的目的，对内部大涡流仿真代码Hydro3D进行了改进，以研究波浪结构相互作用。首先，该代码用于开发一个数字波箱，该数字波箱能够精确模拟水箱中孤立波的产生，传播和衰减。然后，使用Hydro3d来模拟先前在无限宽的平板上传播的波的实验室实验。通过将平板上的计算出的水位和流体动力与测量数据进行比较，可以验证代码的准确性，在多种条件下（分别是变化的波浪陡度或平板浸没），测量数据均具有良好的一致性。然后将研究扩展到研究三维效应，用无限大的正方形板代替无限宽的板。已经发现，由于问题的三维性，板的下侧和上侧之间的压差驱动沿翼展方向的流动并在板附近产生独特的流动结构和水面波动。进行了进一步的三维研究，其中有限板相对于入射波以迎角固定，并计算了流体动力和自由表面高程的变化。当将板固定在 进行了进一步的三维研究，在该研究中，有限板相对于入射波以迎角固定，并计算了流体动力和自由表面标高的变化。当将板固定在 进行了进一步的三维研究，其中有限板相对于入射波以迎角固定，并计算了流体动力和自由表面高程的变化。当将板固定在${45}^{\circ }$出现水平和较小的水位波动，反映了板边缘附近的旋转流模式。速度矢量，旋流强度，压力和波高以及作用力的曲线图揭示了无限宽的矩形板和有限的方形板之间的显着差异。