SPH Analysis of Hydrodynamic Impact, Including Hydrodynamic Fluid-Structure Coupling

摘要

Hydroelasticity plays a significant role in impact problems, particularly in LNG tankers where violent sloshing may occur, with a periodicity depending on the sea state. The impacts of the Liquefied Natural Gas (LNG) against the membrane can result in a weakening of the global structure. For safety reasons the knowledge of the influence of fluid-structure interactions in such phenomena cannot be neglected. Smooth Particles Hydrodynamics (SPH) is a Lagrangian meshless method, which enables the simulation of complex free surface flows in a natural way. SPH has proven its ability to treat problems both in fluid and in structure and is thus a good candidate for solving issues involving fluid-structure interactions. It is particularly adapted for this kind of problem by its aspect and because multi-fluid or fluid-solid interactions do not need a particular treatment.