【摘要】 甲板上浪发生时产生的巨大冲击载荷可以对海洋结构物造成严重破坏,其发生时的海况比较恶劣,带有较强的非线性特点。采用CFD软件Fluent中的动网格功能造波结合软件中的VOF模块捕捉自由液面再现了单个极大波浪的生成过程,继而对固定甲板情形下的上浪问题进行了考察,波浪遭遇甲板后产生了流动的分离,甲板上下的水体表现出了完全不同的流动特点。通过可视化计算结果和深入细致的速度剖面分析,更好地加深了对这一复杂流动过程的理解。最后还将模拟结果与实验结果在定性和定量上进行了对比,表现出了良好的一致性。更多还原

【Abstract】 Green water induced load can cause severe damages to offshore structures.It usually occurs in harsh sea conditions and is accompanied by highly non-linear features.A flap-tpye wavemaker for generating waves combined with free surface capturing scheme VOF method in CFD software Fluent was used to model the evolution of a single extreme wave.Then,green water on a fixed deck was investigated.Wave separation occurred after meeting the deck.Water on the deck and below the deck behaved completely differently.With visualized simulated results and detailed velocity profile analysis,the understanding of the highly non-linear flow is enhanced.Comparison with the experiment shows good agreement both quantitatively and qualitatively.更多还原