RANS Computations of Added Resistance and Motions of a Ship in Head Waves
RANS Computations of Added Resistance and Motions of a Ship in Head Waves
复制标题
DOI：
--
复制
发表时间：
2012
影响因子：
0.8
通讯作者：
Zhi-rong Shen;D. Wan
中科院分区：
文献类型：
--
作者：
Zhi-rong Shen;D. Wan
本文给出了船舶在首波中作升沉和纵摇运动时的RANS计算。增加的阻力，垂荡和纵摇运动进行了数值研究。计算基于流体体积法（VOF）和动态变形网格法，并采用有限体积法（FVM）进行离散。一个六自由度（6DoF）的模块来预测船舶运动。考虑了波陡范围为400025 ≤ ak ≤ 001005的四种波浪条件。所有条件下的波长均为一个船长，结果显示出强烈的非线性特征，特别是当ak = 00 100时，观察到甲板上的绿色水现象。所给出的计算结果与测量值之间的附加电阻比较显示出良好的一致性。在ak = 00025时，使用三种不同网格进行网格收敛研究，以进行验证。所有的计算都是由我们的求解器，naoe-Foam-SJTU，在开源代码OpenFOAM的框架下开发的。
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 (6DoF) module is implemented to predict the ship motions. Four wave conditions with a wide range of wave steepness 400025 ≤ ak ≤ 001005 are considered. The wave length for all conditions is one ship length, and the results show strong nonlinear features, especially for ak = 00100, 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 = 00025 for validation. All computations are performed by our solver, naoe-Foam-SJTU, developed under the framework of the open source code, OpenFOAM.