CFD Simulation of Ship Seakeeping Performance and Slamming Loads in Bi-Directional Cross Wave
CFD Simulation of Ship Seakeeping Performance and Slamming Loads in Bi-Directional Cross Wave
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DOI：
10.3390/jmse8050312
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发表时间：
2020-04
影响因子：
2.9
通讯作者：
Jialong Jiao;Songxing Huang
中科院分区：
文献类型：
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作者：
Jialong Jiao;Songxing Huang
复杂海洋环境下船舶耐波性能的准确预测是船舶设计和海上实际运行的基本要求。在本文中，采用具有重叠网格技术的非定常雷诺平均纳维-斯托克斯（RANS）计算流体动力学（CFD）求解器来评估在双向横波中运行的S175集装箱船的耐波性能。交叉波是通过矩形数值波池中两个正交规则波的线性叠加来再现的。系统分析了不同波长、航向角等控制参数下横波引起的船舶非线性运动响应、船头砰击载荷和甲板上浪情况。结果表明，横波引起的船舶垂向和横向运动响应以及砰击压力都可能很大，与规则波中的情况有很大不同。因此，船舶遭遇横浪时的航行安全值得进一步关注。
Accurate prediction of ship seakeeping performance in complex ocean environment is a fundamental requirement for ship design and actual operation in seaways. In this paper, an unsteady Reynolds-averaged Navier–Stokes (RANS) computational fluid dynamics (CFD) solver with overset grid technique was applied to estimate the seakeeping performance of an S175 containership operating in bi-directional cross waves. The cross wave is reproduced by linear superposition of two orthogonal regular waves in a rectangle numerical wave tank. The ship nonlinear motion responses, bow slamming loads, and green water on deck induced by cross wave with different control parameters such as wave length and wave heading angle are systemically analyzed. The results demonstrate that both vertical and transverse motion responses, as well as slamming pressure of ship induced by cross wave, can be quite large, and they are quite different from those in regular wave. Therefore, ship navigational safety when suffering cross waves should be further concerned.