A depth-resolving model for intraswash hydrodynamics and sediment transport

Abstract

Numerical studies of sediment transport and morphodynamics in the swash zone generally use numerical models based on the depth-averaged shallow water equations. However, such models still have difficulty predicting the sediment transport (and subsequently morphodynamics) in the swash (see e.g. Ruffini et al., 2020). Depth-resolving models, such as models solving the ReynoldsAveraged-Navier-Stokes (RANS) equations have previously shown to accurately simulate swash hydrodynamics and also sediment transport in the surf zone (Jacobsen et al., 2014). However, applications of a RANS model capable of simulating sediment transport in the swash are limited. In this study, we present preliminary results from our RANS model on sediment transport in the swash