Numerical Simulation Of The Wave Impact On Hollow Square

Coastal defences such as breakwater and revetment are built to protect the population and infrastructure in coastal zones. These defences protect infrastructures against storm surge and large waves that may cause run-up and overtopping on structures leading to potential damage and flooding of the area behind the structure. As a common form in the field of coastal engineering, Hollow Square draws a lot of attention of those scholars. With the development of computer technology, some numerical studies have already focused on the interaction between wave and Hollow Square.The application of a meshfree method-Smoothed Particle Hydrodynamics (SPH) to model the three-dimensional wave-structure interaction of wave and Hollow Square is presented. In this paper, a whole system was built up from setting a 3D model to paralleling the algorithm. With this system, the interactions between wave and a single hollow square/ a rubble mound breakwater have been simulated.A 3D model building method, which based on SPH, is introduced to build 3D numerical tank model. The key methods of the simulate process such as virtual particle, linked-list search algorithm and predictor-corrector scheme are studied.The processes of building this 3D model which based on the computer graphics platform-AutoCAD and unstructured mesh technology are detailed explained and a three dimension complex region fluid particle fill algorithm is proposed. A parallel computing method based on OpenMP technology which can be used on multi-core shared memory computer is developed.Finally, examples of the interaction between wave and hollow square/breakwater are simulated. The fields of viscosity and pressure and the interaction force between wave and Hollow Square are analyzed.