运动自由度对固连浮体狭缝水体共振的影响分析

Influence of Degree of Freedom Motion on Resonance of Narrow Slit Water between Floating Bodies with Solid Connection

海洋工程多体系统相距较近时,多体间会形成狭缝。当特定频率的波浪入射时,狭缝间的水体会发生共振响应,表现为狭缝处的波面明显抬高、结构物所受波浪作用加剧.论文通过创建粘性不可压缩二维数值水池,对狭缝处水体的共振现象进行模拟,着重研究了浮体具有不同自由度时狭缝处水体的共振特征.计算结果表明:浮体具有垂向自由度时对狭缝处水体的共振具有较大的影响,而水平自由度则影响较小.

Gap exists in multiple floating bodies.The water in the gap may resonant at a certain frequency of incident waves.When the resonance occurs,wave elevations in the gap rise significantly and the wave forces on the structure sharply increase.In the present study,the characteristics of gap resonance were simulated by a two-dimensional viscous incompressible numerical channel.The influence of the degrees of freedom on the gap resonance is emphatically investigated.The results show that the vertical degree of freedom of the floating body has a great influence on the gap resonance,while the horizontal degree of freedom has little influence on it.