Modelling Solitary Waves and Its Impact on Coastal Houses with SPH Method

摘要

The interaction between solid structures and free-surface flows is investigated in this study.A Smoothed Particle Hy-drodynamics(SPH)model is used in the investigation and is verified against analytical solutions and experimental obser-vations.The main aim is to examine the effectiveness of a tsunami-resistant house design by predicting the wave loads on it.To achieve this,the solitary wave generation and run-up are studied first.The solitary wave is generated by allowing a heavily weighted block to penetrate into a tank of water at one end,and the near-shore seabed is modelled by an in-clined section with a constant slope.Then,the SPH model is applied to simulate the three-dimensional flows around dif-ferent types of houses under the action of a solitary wave.It has been found that the tsunami-resistant house design re-duces the impact force by a factor of three.