This paper presents results from the CFD simulation of a lifting hydrofoil in close proximity to a free surface. The case considered is that of a NACA 0012 hydrofoil at a Froude number of 0.567. The depth of submergence is approximately equal to the chord length. All results were produced using the commercial CFD code ANSYS-CFX.The primary emphasis of this paper is on the detailed and quantitative verification of the CFD simulations, focussing especially on the spatial discretization and the choice of boundary conditions. Quantitative assessment is by examining the free surface deformation and the lift, drag and moment coefficients. It is found that a very fine mesh (having approximately 1 x 106 nodes for this 2D case) is required for an accurate prediction of the free surface deformation, whereas a considerably coarser mesh (having approximately 62 x 103 nodes) gives comparatively accurate prediction of the lift, drag and moment coefficients.
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机译：本文介绍了紧靠自由表面的起重水翼的CFD模拟结果。考虑的情况是弗劳德数为0.567的NACA 0012水翼。浸没深度大约等于弦长。所有结果均使用商品CFD代码ANSYS-CFX产生。
本文的主要重点是对CFD模拟的详细和定量验证，尤其是空间离散化和边界条件的选择。定量评估是通过检查自由表面变形以及升力，阻力和力矩系数来进行的。发现要精确预测自由表面变形需要非常细的网格（在这种2D情况下大约有1 x 106个节点），而较粗的网格（大约有62 x 103个节点）可以对自由表面变形进行相对准确的预测。升力，阻力和力矩系数。
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