Numerical modeling of sloshing flow interaction with an elastic baffle using SPHinXsys

Sloshing is a complex fluid motion with high non-linearity. Violent sloshing results in large impact pressure on the tank that may lead to structural damage. Sloshing suppression using anti-sloshing baffles and interaction mechanisms between structure and fluid attract attention increasingly among engineering applications. In this paper, the sloshing flow interaction with an elastic baffle is investigated both numerically and experimentally. SPHinXsys, an open-source library in the entire smoothed particle hydrodynamic (SPH) framework, is applied to study sloshing interaction with an elastic baffle. To validate SPHinXsys model, a series of experiments are performed in a rectangular tank. The quantitative comparisons between numerical results and experimental measurements on the time variation of free surface, pressure and baffle deformation are conducted. The diffusion process of the dye around the baffle in the experiment is recorded and simulated by the FSI solver coupled with the diffusion model. Then the velocity field for varying filling depths is investigated numerically. The total dynamic force acting on the baffle for different water depths is also discussed.