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Safety Research on a Coupled Feeder Vessel and Cages System for Ocean Aquafarm

机译：海洋Aquafarm耦合馈线和笼系统的安全研究

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At present, open ocean aquafarm should be developed to settle the problems which occur in the inshore aquaculture. Accurate computation of force and deformations on feeder vessel and cages under wave and current loads is a key element when designing mooring systems for fish farms. In the present study, with a new type of coupled feeder vessel and cages system as the object of the research, considering the environmental load and the cages dimension parameters as well as the effect on the performance of the system, the Morison equation, A new Cd determination formulation, on-site test and numerical simulation methods are used, and a safety assessment method for the system design is given under the effect of mooring tension and cage volume deformation failure. The main contents are the numerical model is developed by using the commercial software OrcaFlex, the dynamic responds of the vessel are calculated by using ANSYS-AQWA software, first- and second-order wave forces are included in the calculations, Morison equation is used to compute the drag force on line elements representing the net, drag coefficients are determined at every time step in the simulation considering the relative normal velocity between the structural elements and the fluid flow. Based on the numerical model, a simple but effective simulation method is set up to reduce design costs, save concept design time, and avoid the labor of flume tank tests. Finally, a safety evaluation method which is required in the cage system design for aqua-farm has been presented in this paper.
机译：目前，开放的海洋水产养殖场应制定解决发生在近岸养殖的问题。下波和电流负载力和变形的支线船舶和网箱精确计算是一个关键因素为设计养殖场系泊系统时。在本研究中，用新的类型耦合进料器容器和笼系统作为研究的对象，考虑对环境的负荷和笼尺寸参数以及关于该系统中，莫里森式中，A新的性能的影响测定镉制剂，现场试验和数值模拟的方法被使用，并且该系统设计安全评估方法系泊张力和笼体积变形破坏的作用下给出。主要内容的数值模型是通过使用商业软件开发OrcaFlex，容器的动态响应是通过使用ANSYS-AQWA软件计算，一阶和二阶波浪力被包括在计算中，莫里森等式用于计算在表示网线元件的拖曳力，阻力系数在模拟考虑结构元件和流体流之间的相对速度正常每个时间步长确定。基于数值模型，一个简单而有效的模拟方法建立了以降低设计成本，节省概念设计时间，并避免水槽水池试验的劳动。最后，这是在笼式系统设计用于水产养殖场所需的安全性评价方法已在本文提出。

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