Interaction analysis between waves and perforated caisson using the revised smoothed particle hydrodynamics method and finite element method

Abstract

A two-dimensional smoothed particle hydrodynamics analysis model based on Riemann solution is put forward to discuss its application for the wave-perforated caisson interaction problem. The wave particles are simulated by the smoothed particle hydrodynamics method and the perforated caisson employs the finite element method. The numerical method has been verified by comparing the process of elastic plate with liquid tank with test, and a good agreement is reached. Then, the proposed method is employed to study the distribution of dynamic stress in the perforated plate position of dissipation chamber at the still water level, as well as the distribution of dynamic stress along the perforated plate. Furthermore, the relationship between the dynamic stress and the corresponding coefficient is also discussed, such as the relative width B/L of dissipation chamber of no-roof perforated caisson and the relative height s/L of top cover of perforated caisson. This article concludes by providing reference to the design and construction of perforated caisson breakwaters.