波浪冲击作用下核电站防浪堤动力响应的数值模拟

基于多物质ALE方法，利用带阻尼罚函数实现波浪与防浪堤结构间耦合作用，模拟波浪冲击作用下防浪堤结构及流体三维动态响应过程，所得结果与物理模型试验结果一致性较好。讨论挡浪墙表面波压力分布及挡浪墙所承受最大水平推力及结构动态响应对波浪冲击系数影响。结果表明，前挡浪墙静水面位置与后挡浪墙底部波压力较大；后墙承受波浪水平推力较大；结构动态响应会增强波浪的冲击作用。仿真结果可作为防浪堤强度设计重要依据及控制越浪量设计参考。

Numerical simulation of the breakwater dynamic response under wave impact

To understand and improve the anti-wave impact performance of coastal breakwater, the dynamic behaviors of the breakwater under wave impact were numerically simulated. The wave movement was modeled by using the multi-material ALE method. The interaction between the breakwater structure and fluid was studied by applying the penalty method. The model and approaches were validated by comparing numerical results with experimental data. Based on the above investigation, numerical simulation was performed to explore the distribution of seawall surface wave pressure and the maximum horizontal thrust. The effect of breakwater structure response to wave pressure was also dealt with in this research. The results show that: the wave pressures were in good agreement with experimental results, the wave impact was enhanced by structural dynamic response, and the rear wall withstands the larger wave horizontal thrust. It can provide references for the anti-wave impact design and overtopping design of the coastal Nuclear Power Plant breakwater.