Abstract This paper and its companion (Di Paolo et al. (b), submitted) present near-far field coupling schemes of Navier-Stokes (NS) equations for high-fidelity numerical modelling of wave generation, transformation and interaction with structures. The computational domain is subdivided into near and far field zones (2D and 3D subdomains, respectively) in which the NS equations are solved adopting the Finite Volume Method. The couplings can be made through the one-way or two-way exchange of flow information, thus providing a complete tool for studying one or bi-directional processes in which the three-dimensional flow is expected to be confined in the near field. The global coupled system, which is built on the OpenFOAM® platform, is based on a multi-domain approach in which the sub-domains (i.e., 2D and 3D meshes) are built independently. In Part I, the coupling methodologies have been validated against full 3D models taking into account wave propagation under different conditions with excellent results and high efficiency. Part 2 (Di Paolo et al. (b), submitted) involves the validation and application of the proposed methodologies to complex wave-structure interaction studies.

中文翻译：

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在 OpenFOAM® 中使用 Navier-Stokes 求解器的多域耦合进行波和结构相互作用。第一部分：实施和验证

摘要 本文及其同伴（Di Paolo 等人 (b)，已提交）提出了 Navier-Stokes (NS) 方程的近远场耦合方案，用于波浪产生、转换和与结构相互作用的高保真数值建模。计算域细分为近场区和远场区（分别为 2D 和 3D 子域），其中 NS 方程采用有限体积法求解。耦合可以通过流动信息的单向或双向交换来实现，从而为研究预期将三维流动限制在近场中的单向或双向过程提供了完整的工具。建立在 OpenFOAM® 平台上的全局耦合系统基于多域方法，其中子域（即 2D 和 3D 网格）是独立构建的。在第 I 部分中，耦合方法已针对全 3D 模型进行了验证，同时考虑了不同条件下的波传播，并且具有出色的结果和高效率。第 2 部分（Di Paolo 等人 (b)，已提交）涉及将所提出的方法学验证和应用到复杂的波浪结构相互作用研究中。