The Finite-Analytic Navier-Stokes (FANS) computational fluid dynamics (CFD) code was coupled with an in-house nonlinear finite element (FEM) mooring analysis program, MOORING3D, to study the dynamic responses of a catenary anchor leg mooring (CALM) buoy system in waves. The hydrodynamic loading on the moored buoy was estimated by the CFD module, in which large eddy simulation (LES) was used as the turbulence model. The FANS code was solved in conjunction with the level-set (LS) formulation to model waves. A motion solver in six degrees of freedoms (DoFs) was coupled with the MOORING3D and the CFD to achieve the coupled analysis. Model-scale simulations of free-decay motions of the buoy were performed and validated by experimental comparison. Simulations of the wave-induced motion of the buoy were performed, and the response amplitude operators (RAOs) were compared to experiments. The agreement with experiments manifested the advantages of the coupled CFD-mooring method in addressing viscous and turbulent effects and nonlinear hydrodynamic effects due to free surface. The sensitivity study of the skirt demonstrates the skirt exerting limited influence on the buoy RAOs, which appeared to be dominated by the inertial and viscous effects of the buoy hull. The conclusions demonstrate that the coupled FANS-MOORING3D code provides accurate prediction of wave-induced motion of floating systems.

有限解析Navier-Stokes（FANS）计算流体力学（CFD）代码与内部非线性有限元（FEM）系泊分析程序MOORING3D结合使用，以研究悬链式锚腿系泊（CALM）的动力响应波浪中的浮标系统。通过CFD模块估算了系泊浮标上的流体动力载荷，其中使用大涡模拟（LES）作为湍流模型。FANS代码与水平集（LS）公式一起建模，从而得到解决。将六个自由度（DoF）的运动求解器与MOORING3D和CFD耦合在一起，以进行耦合分析。进行了浮标自由衰减运动的模型规模模拟，并通过实验比较进行了验证。进行了浮标波诱导运动的仿真，并将响应幅度算子（RAOs）与实验进行了比较。与实验的一致性表明，耦合CFD系泊方法在解决由于自由表面引起的粘性和湍流效应以及非线性流体动力效应方面的优势。裙的敏感性研究表明，裙对浮标RAO的影响有限，而浮标RAO似乎受浮标船体的惯性和粘性作用支配。结论表明，耦合的FANS-MOORING3D代码可提供对波浪引起的浮动系统运动的准确预测。裙的敏感性研究表明，裙对浮标RAO的影响有限，而浮标RAO似乎受浮标船体的惯性和粘性作用支配。结论表明，耦合的FANS-MOORING3D代码可提供对波浪引起的浮动系统运动的准确预测。裙的敏感性研究表明，裙对浮标RAO的影响有限，而浮标RAO似乎受浮标船体的惯性和粘性作用支配。结论表明，耦合的FANS-MOORING3D代码可提供对波浪引起的浮动系统运动的准确预测。