新型捕能消波浮式防波堤数值模拟与试验研究

Numerical simulation and experimental study on a new type of energy absorptionand wave elimination floating breakwater

采用数值模拟和物理试验研究方法,研究了新型捕能消波浮式防波堤savonius型桨叶两种布置形式的捕能及消波性能。利用STAR-CCM+数值仿真软件,通过调用重叠网格、时间二阶离散、增加数值迭代的方法,建立了浮式防波堤三维水动力模型并进行数值模拟。研制了该防波堤物理试验系统,测试浮式防波堤捕能消波性能,综合分析数值模拟与物理试验的结果。结果表明,该新型浮式防波堤在桨叶转动频率与波浪频率相近时捕能功率最大,桨叶并列布置方式的消波性能比桨叶垂直布置方式更为优越。

By means of numerical simulation and physical experiment,the energy capture and wave elimination performance of two types of arrangement of savonius type paddles for a new type of energy capture and wave attenuation floating breakwater are studied.By using STAR-CCM+numerical simulation software,the three-dimensional hydrodynamic model of floating breakwater is established and numerical simulation is carried out by calling overlapping grid,second-order time discretization and adding numerical iteration method.The physical experiment system of the breakwater is developed,and the energy absorption and wave elimination performance of the floating breakwater is tested.The results of numerical simulation and physical experiment are analyzed.The results show that the new type of floating breakwater has the largest energy harvesting power when the rotating frequency of the blades is close to the wave frequency,and the wave elimination performance of the parallel arrangement of the blades is better than that of the vertical arrangement of the blades.