Numerical Calculation of Slosh Dissipation

As part of the Sloshing Wing Dynamics H2020 EU project, an experimental campaign was conducted to study slosh-induced damping in a vertically excited tank filled with liquid water or oil and air. In this work, we simulate these experiments using two numerical approaches. First, single-phase, weakly compressible model is used, gas flow (air) not modeled. For approach, proven Smoothed Particle Hydrodynamics (SPH) used. second both phases are simulated incompressible via Finite Volume Method (FVM) Volume-of-Fluid (VOF) track phase. approaches, energy distribution calculated over time two- three-dimensional simulations. It found that there reasonable agreement on dissipation evolution between methods. Both approaches show converging results 2D simulations, although SPH simulations seem have faster convergence rate. general, tend overpredict total compared experiment, while finite volume underpredict it. Time histories center mass positions also compared. The much larger vertical motion FVM results, which more pronounced for high Reynolds number (water) case, probably linked absence air On other hand, limited could be need higher spatial resolutions order resolve complex gas–liquid interactions, particularly 3D.