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OpenFOAM analysis of the wave radiation by a box-type floating structure

机译：箱式浮动结构对波辐射的OpenFOAM分析

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Wave radiation due to heave, surge, and pitch by a box-type floating structure based on computational fluid dynamics (CFD) simulations using OpenFOAM is analysed. The CFD simulation results include surge and heave forces and response amplitude operator for the heave, surge, and pitch at different wave lengths. The numerical simulation results of heave force due to incoming waves and resulting motion are compared against experimental data and linearized analytical solutions based on velocity potential flow theory. The hydrodynamic effect on the width and draft of the structure in analytical results for vertical wave force, horizontal wave force, and torque are studied whilst, the effect of different wave lengths on heave, surge and pitch forces and response amplitude operator from CFD results are analysed. The comparison shows that the CFD results are in good agreement with the experimental ones and are very close to the analytical ones. The paper concludes that CFD is well capable of simulating wave interaction behaviour of a box-type floating structure for wave energy converters, and the developed analytical model can serve as an efficient middle-fidelity performance evaluation tool for such structures during design development stage.
机译：基于使用OpenFOAM的计算流体动力学（CFD）模拟，分析了箱型浮动结构由于起伏，喘振和倾斜引起的波辐射。 CFD仿真结果包括浪涌和起伏力以及不同波长下的起伏，喘振和俯仰的响应幅度算符。将基于入射波和产生的运动引起的升沉力的数值模拟结果与实验数据和基于速度势流理论的线性化解析解进行了比较。在分析垂直波力，水平波力和扭矩的分析结果中，对结构宽度和吃水深度的流体动力效应进行了研究，同时，不同的波长对升力，浪涌和俯仰力以及CFD结果响应幅度算符的影响为分析。比较表明，CFD结果与实验结果吻合良好，与分析结果非常接近。本文的结论是，CFD能够很好地模拟箱型浮式结构在波能转换器中的波相互作用行为，并且开发的分析模型可以在设计开发阶段作为此类结构的有效中保真性能评估工具。

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