Numerical modeling of Wave Propagation due to dam breaks and regular wave on a bed with a hump using WCSPH

In this paper, a linear Lagrangian numerical model is used for simulating the wave propagation due to dam breaks on a dry bed with a hump, as well as the regular wave propagation on impermeable sloped sea wall, called the relatively compact (GCM) hydrodynamic model of relatively compact particles (WCSPH). This model is two-dimensional and considers the fluid to be weakly compressible. In addition to solving the viscous fluid governing equations for velocity and density field uses the state equation for obtaining the pressure. This reduces the computational volume compared to the base method of the particle hydrodynamic model. To simulate fluid turbulence in the wave propagation process due to dam break on a dry bed with a hump and regular wave propagation on impermeable sloped sea wall the SPS turbulence model, which was obtained by large eddy simulation (LES) approach was used. The results of numerical simulations were compared with laboratory experiments. Also, the results of present numerical model were compared with the other numerical model. The results shown, the WCSPH computations produce better results than those of other numerical model, with respect to the experimental data. The modeling results show that many complex phenomena that occur in wave propagation over a hump, such as hydraulic jump, wave breaking and partial reflections can be well modeled using the WCSPH method. The results of this study show that WCSPH method provides a useful tool to investigate the wave propagation due to dam break and regular wave over impermeable hump.