Numerical Simulation of Free Surface Flows based on SPS-SPH Method

The SPS-SPH method was proposed to overcome the shortcomings of too dispersive artificial viscosity in Smoothed Particle Hydrodynamics(SPH) method,as well as to improve the disadvantage that the laminar viscous in improved SPH method can not capture the main features of turbulent flow accuracy.Using the concepts of Large Eddy Simulation(LES),the SPS-SPH method proposes the Sub-Particle Scale(SPS) eddy viscosity item which is added after the laminar viscosity item proposed by Morris et al.The SPS-SPH method was described in detail.A 2D dam-break model taken as the validation case was simulated by SPS-SPH method and SPH method,respectively.The numerical results are compared with experimental data,which shows that SPS-SPH method is reasonable and reliable in studying free surface flows.Furthermore,the SPS-SPH is applied to simulate two types of 2D and 3D free surface problems.The numerical results indicate that the SPS-SPH method has good accuracy in solving free surface flows and has a great reference value for solving such problems.