基于非结构化网格的波流耦合模拟及应用  

Numerical simulation of wave-current coupling on unstructured meshes and its application

作　　者：王平[1] 张宁川[1] 

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室,大连116024

出　　处：《水道港口》2014年第3期185-192,共8页Journal of Waterway and Harbor

基　　金：国家创新研究群体科学基金(50921001)

摘　　要：波浪与潮流相互作用是近岸海域的关键水动力因素。基于相同的非结构化网格同时模拟潮流和波浪,并通过参数的同步传递,即实现波流的耦合计算。模型中潮流基于三维水动力模型FVCOM,并引入波致辐射应力和水体紊动;波浪基于波谱平衡方程和光程函数方程求解,方程中均考虑流速的影响,可用于大范围波流耦合计算。通过两个算例对流和波浪在传播过程中的相互影响进行了验证;同时对实际海域的潮流和波浪进行了耦合计算,结果表明:模型对模拟近岸波流的耦合作用有着很好的精度和适用性,可用于实际工程的计算。The interaction of wave and current was crucial hydrodynamics in near-shore zone.To achieve the wave-current coupling calculation,the wave and current was simulated on the same unstructured meshes and the influence parameters were transferred synchronously each other.The calculation of current was derived from three-dimensional hydrodynamic model FVCOM,included the depth-dependent radiation stress and the wave-induced turbulences.The wave was based on the wave action balance equation and the eikonal equation,which both considered the impact of the current field.The model could simulate the wave-current coupling in large-scale nearshore region.The applicability of the proposed model to calculate the interaction of current and wave during the propagation process by two examples was evaluated.Numerical results show that the present model makes better accuracy and applicability in modeling the wave-current coupling propagation,and it can be applied in the actual project.

关 键 词：波浪 潮流 波生流 同步耦合 非结构化网格 大范围 

分 类 号：TV141[水利工程—水力学及河流动力学] O242.1[理学—计算数学]