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针对某核电站防波堤,提出了混合模型方法,该方法将局部仿真包含在整体仿真中,避免了局部模型分离带来的误差,弥补了以往宏观及微观无法兼顾的缺陷.研究了数值造波方法,建立了数值波浪水槽,利用边界造波法模拟了海浪的生成.利用ALE方法,解决了海浪与防波堤之间的流固耦合问题.建立了核电站防波堤三维整体有限元模型,模拟了海浪冲击防波堤的过程,分析了关键堤段挡浪墙的应力应变状况.同时模拟了防波堤的越浪过程,分析了不同堤段下的越浪量分布.通过实际计算验证,证明了该仿真方法的可行性.
Aiming at the breakwater in a nuclear power plant, a hybrid model method is proposed, which includes the local simulation in the overall simulation and avoids the error caused by the separation of the local model, which makes up for the defects that the macroscopic and microscopic can not be balanced in the past. A numerical wave flume is established and the waves generated by the boundary wave method are simulated.The problem of fluid-solid coupling between wave and breakwater is solved by using ALE method.The three-dimensional finite element model of the breakwater in nuclear power plant is set up to simulate the impact of waves on the breakwater The stress and strain of the retaining wall of the key embankment section are analyzed, and the over-wave course of the breakwater is simulated and the over-wave distribution under different embankment sections is analyzed. The feasibility of this simulation method is proved through practical calculation and verification.