A Study Of Numerical Simulation Analysis Of Wave Breaking Based On SPH Method

Smooth Particle Hydrodynamics,shortly SPH is relatively new in the field of fluid mechanics calculation method,and a Lagrangian method which developed in recent 20 years.SPH is a points method that calculate the space derivative don't need to use any grid,it is a more applicable new meshless particle method.Using SPH method to establish the model by selection parameters of the program,and simulate the three types of breaking waves of nearshore beach.Through post-processing simulation the form to analysis the wave velocity,pressure and properties,and compared with the actual situation.It is concluded that SPH method have accuracy and feasibility on the processing of free surface large deformation problems.In addition,the effect of wave breaking is analyzed,that is,bed scouring sediment.Through the simulation results of three different crushing waves and the control of the wave elements,the modified band slope coefficient formula is used to compare the motion severity of the three broken waves,and it is concluded that the bed fluid velocity plays a decisive role in the bed scour.