<scp>Three?dimensional</scp>weakly compressible moving particle simulation coupled with geometrically nonlinear shell for hydro?elastic free?surface flows

A 3D fluid-structure interaction solver based on an improved weakly-compressible moving particle simulation (WC-MPS) method and a geometrically nonlinear shell structural model is developed applied to hydro-elastic free-surface flows. The coupling performed by polygon wall boundary that can handle particles finite elements of distinct sizes. In WC-MPS, tuning-free diffusive term introduced the continuity equation mitigate non-physical pressure oscillations. Discrete divergence operators are derived boundary, which numerical stability enhanced repulsive Lennard-Jones force. Additionally, efficient technique deal with between fluid placed at opposite sides zero-thickness walls proposed. modeled unstructured mesh six-node triangular elements. Finite rotations considered Rodrigues parameters hyperelastic constitutive adopted. Benchmark examples involving flows thin-walled structures demonstrate proposed robust, numerically stable offers more computation allowing size larger than particles.