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首页> 外文期刊>International Journal of Offshore and Polar Engineers >RANS Computations of Added Resistance and Motions of a Ship in Head Waves
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RANS Computations of Added Resistance and Motions of a Ship in Head Waves

机译：RANS计算船头浪中附加阻力和运动

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摘要

RANS computations of a ship with heave and pitch motions in head waves are presented. The added resistance, heave and pitch motions are investigated numerically. The computations are based on volume of fluid (VOF) and dynamic deformation mesh methods, discretized by finite volume method (FVM). A six-degree-of-freedom (6D0F) module is implemented to predict the ship motions. Four wave conditions with a wide range of wave steepness (0.025 ≤ak≤ 0.100) are considered. The wave length for all conditions is one ship length, and the results show strong nonlinear features, especially for ak = 0.100, where the phenomenon of green water on deck is observed. The comparison of added resistance between the presented computational results and measurements shows good agreement. A grid convergence study with three different grids is performed at ak = 0.025 for validation. All computations are performed by our solver, naoe-Foam-SJTU, developed under the framework of the open source code, OpenFOAM.
机译：提出了具有头波起伏和俯仰运动的船舶的RANS计算。对增加的阻力，升沉和俯仰运动进行了数值研究。计算基于流体体积（VOF）和动态变形网格方法，并通过有限体积方法（FVM）离散化。实施了六自由度（6D0F）模块来预测船舶运动。考虑了四个具有较大波陡度（0.025≤ak≤0.100）的波浪条件。所有条件下的波长均为一艘船的长度，结果显示出很强的非线性特征，尤其是对于ak = 0.100，其中观察到甲板上有绿水现象。给出的计算结果和测量值之间的附加电阻比较表明，该协议具有很好的一致性。为了验证，使用ak = 0.025进行了具有三个不同网格的网格收敛研究。所有计算均由我们的求解器naoe-Foam-SJTU执行，该求解器是在开放源代码OpenFOAM框架下开发的。

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