Smoothed Particle Hydrodynamics Simulations of Dam-Break Flows Around Movable Structures

In this paper, 3D weakly compressible smoothed particle hydrodynamics (WCSPH) and incompressible smoothed particle hydrodynamics (ISPH) models are used to study dam-break flows impacting either a fixed or a movable structure. First, the two models’ performances are compared in terms of CPU time efficiency and numerical accuracy, as well as water surface shapes and pressure fields. Then, they are applied to investigate dam-break flow interactions with structures placed in the path of the flood. This study found that the ISPH modeling approach is slightly superior to the WCSPH approach because more stable particle motion and pressure distribution can be achieved with a reasonable CPU load.