Investigation of sloshing characteristics in the sloped bottom liquid container under periodic excitation.

Sloshing can be defined as the formation of wave or oscillation of unrestrained free liquid surface under the influence of any kind of external excitation.  Since the amount of liquid participates in sloshing depends on some crucial parameters, but here in this study, a slope bottom liquid container is addressed which dissipate the sloshing energy and minimize the hydrodynamic pressure distribution on the walls of the container. The concept of providing slope has come upon as the wave energy gets dissipated along the shores of the beach. So in this present study, a numerical approach based on Galerkin finite element method is adopted to analyze the liquid sloshing in the sloped bottom tank under periodic horizontal ground motion. The whole liquid domain is discretized as the combination of three node triangular element and four-node quadrilateral element. The efficiency of the present numerical formulation is verified by comparing the fundamental sloshing frequency with previously published experimental and analytical solution. The finite element code also capable of determining the slosh displacement from the free surface, base shear at tank bottom and pressure distribution along the walls of the container at a different instance of time.