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A coupling improved Moving Particle Semi-Implicit (MPS) method and the finite element method (FEM) is developed and applied to the problem of interaction between elastic structures and the violent sloshing flow in rolling tanks. The MPS method and the FEM, used to calculate the fluid field and structural deformation respectively, are introduced firstly. Then, the coupling strategy is also presented. To validate accuracy of the proposed algorithm for deformation of an elastic structure, two benchmarks are investigated and present results show good agreement with published data. Finally, cases about the sloshing with thin elastic baffles mounted in the partially filled rolling tanks are numerically studied. Both profiles of free surface and deflections of the baffles are in good agreement with experimental data.

Particle method; Moving Particle Semi-Implicit (MPS); finite element method (FEM); Fluid structure interaction (FSI); Sloshing; Roll motion