The interactions of random waves with a cluster of structures positioned in a gridded array are investigated through a series of experiments and high-fidelity RANS and LES simulations. The performances of two different turbulence models, $k-\omega$ SST and LES, are evaluated in terms of the predicted flow field and resulting loading on the structures, both in the time and frequency domains. The comparative analyses show that the $k-\omega$ SST model predicts the free surface elevations slightly better than that of the LES model. The $k-\omega$ SST model fails to resolve the velocity fluctuations leading to the underestimation of the flow kinetic energy. The $k-\omega$ SST model underpredicts the wave runup/rundown, as well as the depth-integrated pressure force, compared to the LES model. The wave runup heights and onshore-directed depth-integrated pressure forces are found to follow the Rayleigh distribution. The comparisons of the wave runup heights and corresponding onshore-directed hydrodynamic forces follow a relatively linear trend that is within the $\mp$95% confidence intervals.

通过一系列实验和高保真 RANS 和 LES 模拟，研究了随机波与位于网格阵列中的一组结构的相互作用。两种不同湍流模型的表现，$克-\omega$SST 和 LES 是根据预测的流场和结构上产生的载荷在时域和频域中进行评估的。对比分析表明，$克-\omega$SST 模型对自由表面高程的预测略好于 LES 模型。这$克-\omega$SST 模型未能解决导致低估流动动能的速度波动。这$克-\omega$与 LES 模型相比，SST 模型低估了波浪的上升/下降，以及深度综合压力。发现波浪上升高度和陆上定向深度综合压力遵循瑞利分布。波浪爬高高度和相应的陆上水动力的比较遵循相对线性的趋势，在$\mp$95% 置信区间。