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

摘要

An SPH model of monofluid/structure interactions has already beenintegrated in a parallel solver named SPH-flow, and applied in thecontext of sloshing impacts (Oger et al., 2009). The developmentscarried out by HydrOcean and Ecole Centrale Nantes were supportedby GTT (Gaztransport & Technigaz) for sloshing applications.The formulation of SPH-flow has been recently extended as a result ofthis partnership, enabling the treatment of interactions between severalfluids.This paper presents the theoretical model of SPH-flow for the twophaseformulation. Applications to liquid impacts are given, confirmingthe strong influence of the gas on the flow evolution and impactpressure peaks.The two first simulations proposed in the paper are a contribution to thenumerical comparative study organized within ISOPE 2010: the monodimensionalproblem of a piston compressing a gas, and the free gravityfall of a bi-dimensional liquid patch through a gas. Finally, thesimulation of a breaking wave impacting a rigid wall with a gas pocketentrapped is presented.