Simulation of Liquid Impacts with a Two-phase Parallel SPH Model

摘要

An SPH model of monofluid/structure interactions has already been integrated in a parallel solver named SPH-flow, and applied in the context of sloshing impacts (Oger et al., 2009). The developments carried out by HydrOcean and Ecole Centrale Nantes were supported by GTT (Gaztransport & Technigaz) for sloshing applications. The formulation of SPH-flow has been recently extended as a result of this partnership, enabling the treatment of interactions between several fluids. This paper presents the theoretical model of SPH-flow for the twophase formulation. Applications to liquid impacts are given, confirming the strong influence of the gas on the flow evolution and impact pressure peaks. The two first simulations proposed in the paper are a contribution to the numerical comparative study organized within ISOPE 2010: the monodimensional problem of a piston compressing a gas, and the free gravity fall of a bi-dimensional liquid patch through a gas. Finally, the simulation of a breaking wave impacting a rigid wall with a gas pocket entrapped is presented.