二维间断有限元水动力模型与波浪模型实时耦合研究

A real-time coupling model of waves and two-dimensional hydrodynamic model based on nodal discontinuous Galerkin method

近岸环境中波浪、水流同时存在且相互影响,准确模拟波流耦合作用下的水流与波浪运动具有重要实际意义。采用C-Coupler2耦合器将基于无积分节点间断有限元方法建立的二维水动力模型与第三代波浪模型SWAN相耦合,建立了二维波流实时耦合模型。模型应用于裂流通道地形裂流、T型堤波生环流,模拟结果与已有室内实验测量有较好的一致性。模型应用于黄骅港海域大风过程波流计算,模拟结果与现场实测数据吻合良好。

It is of great significance to accurately simulate the flow and waves by coupling waves and current in coastal area, because waves and current coexist and interact with each other. A real-time coupling wave-current model was developed by coupling a two-dimensional hydrodynamic model based on quadrature-free nodal discontinuous Galerkin method with the third-generation wave model SWAN. The coupler of C-Coupler2 was used to finish the coupling. The coupling model was applied in the simulation of rip current in a rip-current channel, wave-induced circulation around T-groin. Finally, the model was applied to the hydrodynamic and wave simulation around Huanghua Port sea area in the process of strong wind. The simulated results are in good agreement either with the experiment data or with the field measurement data.