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Application of SPH in fluid-structure interaction problems involving free-surface hydrodynamics

Abstract:

We investigate the three-dimensional fluid-structure interaction between a free-surface disturbance and a deformable membrane as a canonical problem representative of the interaction between a surface-effect ship (skirt) advancing with forward speed in waves. Namely, we consider the hydro-elastic response of a three-dimensional membrane of arbitrary curvature subject to breaking waves. The numerical study is performed using a hydrodynamic solver developed around an SPH algorithm that is used to simultaneously model both the fluid dynamics and structural dynamics with two-way fluid-structure coupling. Results from this study will be presented along with validation examples and as well as a discussion of our SPH algorithm, in particular our methodology for treatment of boundary conditions, FSI, and fluid viscous effects.