南汇东滩促淤工程南区设计波浪要素研究

Research on design waves elements of siltation promotion project in south region of East Nanhui Beach

针对南汇东滩促淤工程所处的位置,选用基于波能平衡方程和波作用守恒方程的近岸风浪谱模型建立波浪传播计算数值模型,对非线性效应影响条件下的波浪要素进行计算研究。研究结果表明,波浪在远距离的传播过程中,受到沿程的风的影响,组成波之间能量交换转移和耗散等非线性效应的影响不可忽略,在南汇东滩海域采用近岸风浪谱数值模型对波浪的传播变形计算较为合适。

In view of the location of siltation promotion project in East Nanhui Beach,a wave propagation numerical model was built on the basis of the wave energy balance equation and wave action conservation equation.The wave elements affected by nonlinear effect were calculated. The results show that, in the long wave propagation process, due to the effects of wind, the nonlinear effects including the energy exchange between wave components and the energy dissipation shotdd not be neglected, and the wave spectrum model is suitable for wave propagation calculation in East Nanhui Beach.