Comparative Study on Ship Motions in Uni- and Bi-Directional Waves by CFD
Comparative Study on Ship Motions in Uni- and Bi-Directional Waves by CFD
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发表时间：
2020
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通讯作者：
Jialong Jiao;Chaohe Chen
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作者：
Jialong Jiao;Chaohe Chen
船舶在多向波中的运动响应与在单向波中的运动响应不同。更好地理解波浪方向性对船舶运动的影响具有重要意义。本文以S175船体模型为研究对象，采用超置网格法和流体体积法，对船舶大振幅运动和甲板绿水进行了CFD耐波性分析。比较分析了不同波长和波向控制策略下船舶在陆地双向波中的运动。结果表明，船舶在双向波中的运动响应可能比在单向规则波中的运动响应大得多。为船舶在双向海域航行时的安全操作提供了一些有用的指导。
Motion responses of ship in multi-directional wave are different from those in uni-directional wave. It is of great importance to better understand the effect of wave directionality on ship motions. In this study, a S175 hull model is used for the seakeeping analyses of ship large amplitude motions and green water on deck by CFD with overset grid and volume of fluid techniques. The ship motions in uniand bidirectional waves with different control strategy such as wave length and wave heading are comparatively analyzed. The results indicate that ship motion responses in bi-directional waves may be much greater than those in uni-directional regular waves. Some useful guidances for the safety operation of ship when sailing in bi-directional seas are also provided.