Depth-Resolved Modelling of Intra-Swash Morphodynamics Induced by Solitary Waves

We present a fully coupled 2DV morphodynamic model, implemented in OpenFOAM® that is capable of simulating swash-zone morphodynamics sandy beaches. The hydrodynamics are described by the Reynolds-averaged Navier–Stokes (RANS) equations with k?? turbulence model and Volume Fluid (VoF) approach for discriminating between air water. Sediment transport terms bedload suspended load transport. show default divergence scheme OpenFOAM can become numerically unstable lead to negative sediment concentrations, propose solution avoid this problem. performance assessed surface elevation, flow velocities, runup, bed profile evolution volumes comparing measurements field-scale (wave height 0.6 m) solitary waves. shows reasonable agreement predicts correct volumes, although deposition predicted more onshore compared measurements. This partially attributed an overprediction runup. concentration displays strong vertical dependence. These results potential depth-resolving models providing insight into processes swash zone, particularly respect structures