As fish farms move from nearshore region to open sea, understanding the hydrodynamic force on net structures in extreme waves plays a significant role in the design of offshore aquaculture structures. In this study, a series of experiments on different types of net panels in extreme waves were conducted in a wave flume. The dispersive focusing method with the constant steepness spectrum was adopted to generate extreme waves and the effects of the net solidity, the net material and the knot pattern of net panels were experimentally analyzed. The experimental results indicated that the force on the net panel in extreme waves was heavily dependent on the net solidity and the KC number, and it was slightly dependent on the net material. A concept of quasi-static forces was adopted to establish the wave force model to predict the forces on net panels in extreme waves, and then, a quadratic function describing the dependence of the drag coefficient on the solidity and the KC number was obtained. The results indicated that the wave force model could simulate the loading process of the submerged net panels in extreme waves very well.

随着养鱼场从近岸地区转移到公海，了解极端波浪作用于网状结构的水动力在海上水产养殖结构的设计中起着重要作用。在这项研究中，在波浪槽中对极端波浪中不同类型的网板进行了一系列实验。采用恒定陡峭度的色散聚焦法产生激波，并通过实验分析了净密度，净材料和网板结型的影响。实验结果表明，极端波浪作用在网板上的力在很大程度上取决于网的坚固性和KC。数量，这在一定程度上取决于净材料。采用准静态力的概念建立波浪力模型，以预测极端波浪作用下网板上的力，然后得到描述阻力系数对固体和KC数的依赖性的二次函数。结果表明，波浪力模型可以很好地模拟水下波浪在水下波浪中的加载过程。