波浪对淹没水平圆柱作用的非线性数值模拟  

Nonlinear Numerical Simulation of Wave Action on Submerged Horizontal Cylinder

作　　者：严斌[1,2] 林红星[1,2] 宁德志[1,2] 

机构地区：[1]大连理工大学海岸和近海国家重点实验室,辽宁大连116024 [2]中国科学院可再生能源与天然气水合物重点实验室,广东广州510640

出　　处：《海洋科学进展》2013年第3期319-325,共7页Advances in Marine Science

基　　金：国家自然科学基金优秀青年基金--海岸工程和海洋工程(51222902);国家自然科学基金面上项目--极值波浪和水流混合与海上结构物作用的模拟研究(51179028);中国科学院可再生能源与天然气水合物重点实验室开放基金--波浪与一种摇板式波能发电装置作用的非线性数值模拟研究(Y007ka)

摘　　要：采用基于域内源造波技术的时域高阶边界元方法建立了模拟波浪对淹没水平圆柱作用的二维完全非线性数值模型,运用两点分离法得到淹没潜体后的各个组成波的波浪形态。通过与已发表试验数据和解析解的对比,验证了本文模型的正确性。进而开展数值试验研究分析得到强非线性条件下淹没圆柱后高阶自由波和锁定波与入射波参数、淹没水深等因素的变化规律。The time-domain higher-order boundary element method （HOBEM）, which is based on the source generation technique in inner domain, is applied to found a 2D fully nonlinear numerical model for simulating wave action on a submerged horizontal cylinder. The two-point separation method is used to ob- tain the various wave components at the lee side of the submerged body. By comparing with the published experimental data and the analytical solution, the present numerical model is verified. Then numerical ex- periments are further carried out to study the relations between the higher free and locked harmonics at the lee side of the submerged cylinder and the incident wave parameter and submerged water depth under a strong nonlinear wave circumstance.

关 键 词：完全非线性 高阶边界元 两点分离法 高阶自由谐波 淹没水平圆柱 

分 类 号：P731.22[天文地球—海洋科学]