Print Email Facebook Twitter Depth-Resolved Modelling of Intra-Swash Morphodynamics Induced by Solitary Waves Title Depth-Resolved Modelling of Intra-Swash Morphodynamics Induced by Solitary Waves Author Kranenborg, Joost W.M. (University of Twente) Campmans, Geert H.P. (University of Twente) Jacobsen, Niels G. (Deltares) van der Werf, Jebbe J. (University of Twente; Deltares) Reniers, A.J.H.M. (TU Delft Environmental Fluid Mechanics) Hulscher, Suzanne J.M.H. (University of Twente) Date 2022 Abstract We present a fully coupled 2DV morphodynamic model, implemented in OpenFOAM® that is capable of simulating swash-zone morphodynamics of sandy beaches. The hydrodynamics are described by the Reynolds-averaged Navier–Stokes (RANS) equations with a (Formula presented.) turbulence model and the Volume of Fluid (VoF) approach for discriminating between air and water. Sediment transport is described in terms of bedload and suspended load transport. We show that the default divergence scheme in OpenFOAM can become numerically unstable and lead to negative sediment concentrations, and propose a solution to avoid this problem. The model performance is assessed in terms of surface elevation, flow velocities, runup, suspended sediment concentrations, bed profile evolution and sediment transport volumes by comparing with measurements of field-scale (wave height of 0.6 m) solitary waves. The model shows reasonable agreement in terms of hydrodynamics and predicts the correct sediment transport volumes, although the deposition is predicted more onshore compared to the measurements. This is partially attributed to an overprediction of the runup. The model shows that the suspended sediment concentration displays a strong vertical dependence. These results show the potential of depth-resolving models in providing more insight into morphodynamic processes in the swash zone, particularly with respect to vertical structures in the flow and suspended sediment transport. Subject depth-resolving modelintra-swashmorphodynamical modellingsediment transportsolitary waveswash zone To reference this document use: http://resolver.tudelft.nl/uuid:496e509d-61f8-4e9b-bc7d-381a69427741 DOI https://doi.org/10.3390/jmse10091175 ISSN 2077-1312 Source Journal of Marine Science and Engineering, 10 (9) Part of collection Institutional Repository Document type journal article Rights © 2022 Joost W.M. Kranenborg, Geert H.P. Campmans, Niels G. Jacobsen, Jebbe J. van der Werf, A.J.H.M. Reniers, Suzanne J.M.H. Hulscher Files PDF jmse_10_01175.pdf 3.87 MB Close viewer /islandora/object/uuid:496e509d-61f8-4e9b-bc7d-381a69427741/datastream/OBJ/view