【作者】 丁军； 吴有生； 田超； 李志伟；

【Author】 DING Jun;WU You-sheng;TIAN Chao;LI Zhi-wei;China Ship Scientific Research Center;

【机构】 中国船舶科学研究中心；

【摘要】 传统适用于平面海底的有限水深脉动源格林函数并不能较好地描述近岛礁浅水波浪传播特征,但实际分析近岛礁超大型浮体水弹性响应时,Froude-Krylov力的正确计算对浮体水动力载荷的确定是十分关键的。文中基于可以描述近岸波浪变形的缓坡方程和可以计算平面海底上浮体的运动响应的格林函数法,建立了缓坡方程-格林函数耦合模型,并给出详细的理论推导及计算方法,为下一步理论完善、程序编程和实例验证等提供支撑,同时为后续近岛礁超大型浮式结构物的载荷确定、结构设计与安全性评估奠定了基础。更多还原

【Abstract】 The traditional pulsating source Green’s function which is suitable for limited depth and flat seabed cannot better describe the characteristics of wave propagation in shallow water near islands and reefs,but the F-K force is very important in calculating the hydroelastic responses of VLFS near islands and reefs.Based on the Mild-Slope Equation and Green Function,a coupling model of Mild-Slope Equation and Green Function had been built in the paper At the same time,the detailed theoretical derivation and numerical method of this coupling model were also introduced.The work in the paper will provide supports for next plans such as theory developing,procedural programming and instance validating.The coupling model of Mild-Slope Equation and Green Function will be used to simulate the hydroelastic responses in the design stage and safety assessment of VLFS near islands and reefs.更多还原