规则波与浮式防波堤相互作用的SPH模拟研究

SPH simulation of interaction between regular wave and floating breakwaters

相较于传统防波堤,浮式防波堤因具有方便安装、可实现水质交换、可在多种环境下施工以及可移动等优点得到了广泛发展。采用光滑粒子流体动力学(SPH)方法,研究规则波与浮式防波堤的相互作用。首先在空水槽中基于规则波传播算例进行粒子间距的收敛性分析,然后基于验证的水槽模型模拟规则波与单浮体、双浮体的相互作用,并分析了浮体前后波形、浮体的运动及浮体附近的流速场。结果表明,双浮体防波堤相比单浮体防波堤能够显著提升消波性能。

Compared with traditional breakwaters,floating breakwaters have been widely developed because of their advantages such as convenient installation,water quality exchange,construction in various environments and mobility.Smooth particle hydrodynamics(SPH)method is used to study the interaction between regular wave and floating breakwaters.Firstly,the convergence of particle spacing is analyzed based on a regular wave propagation example in an empty water tank.Then,the interaction between regular waves and single and double floating bodies is simulated based on the verified water tank model,and the waveforms in front and back of floating bodies,the movement of floating bodies and the velocity field near floating bodies are analyzed.The results show that the double floating breakwater can significantly improve the wave absorbing performance compared with the single floating breakwater.