Riccardo Briganti, Nicholas Dodd, Dubravka Pokrajac, Tom O'Donoghue


The paper presents the results of a comparison between a fully coupled numerical model for the hydro- and morphodynamics of the swash zone. The model solves simultaneously the Non-Linear Shallow Water Equations and the Exner equation for the bed updates. The model uses the simple Grass formula for the sediment transport and the momentum integral method for the bottom shear stress prediction. The laboratory tests were carried out at the University of Aberdeen swash facility and aimed at studying the hydrodynamics and sediment transport of a single, bore-generated swash event. The comparison is carried out in terms of water depth and horizontal velocity (depth average and profiles) and sediment transport. The model performs well in predicting these quantities, above all during the run-up.


swash-zone morphodynamics; coarse sediment beach; numerical modeling; TVD numerical schemes

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Battjes, J.A., and J.P.F.M. Janssen. 1978. Energy loss and set-up due to breaking of random waves, Proceedings of 14th International Conference on Coastal Engineering, ASCE, 466-480.

De Vriend, H.J., J. Zyserman, J. Nicholson, J.A. Roelvink, P. Pechon, and H.N. Southgate. 1993. Medium-term 2DH coastal area modeling, Coastal Engineering, 21, 193-224.

Wiegel, R.L. 1965. Oceanographical Engineering, Prentice-Hall, Englewood Cliffs, New Jersey, 531 pp.

Briganti, R., N. Dodd, D. Pokrajac, and T. O'Donoghue. 2011. Non linear shallow water modelling of bore-driven swash: Description of the bottom boundary layer, Coastal Engineering, 58(6), 463-477, doi:10.1016/j.coastaleng.2011.01.004.

Briganti, R., N. Dodd, D. Kelly and D. Pokrajac. 2012. An efficient and flexible solver for the simulation of the morphodynamics of fast evolving flows on coarse sediment beaches, Int. J. of Numerical Methods in Fluids, 69(4), 859–877, doi: 10.1002/fld.2618

Fredsøe, J., Deigaard, R., 1993. Mechanics of Coastal Sediment Transport. Vol. 3 of Advanced Series on Ocean Engineering. World Scientific, Singapore.

Kikkert, G.A., T. O'Donoghue, and D. Pokrajac. 2010. Laboratory measurements of hydrodynamics and sediment transport in the swash-zone, Environmental Hydraulics - Proceedings of the 6th International Symposium on Environmental Hydraulics, 1, 601-606.

Kikkert, G.A., T. O'Donoghue, D. Pokrajac and N. Dodd. 2012. Experimental study of bore-driven swash hydrodynamics on impermeable rough slopes, Coastal Engineering, 60, 149-166, doi:10.1016/j.coastaleng.2011.09.006.

Grass, A. 1981. Sediment transport by waves and currents. Report FL29, Ma. Tecnol., SERC London Cent.

MacCormack, R. 1969 The effect of viscosity in hypervelocity impact cratering. AIAA Hypervelocity Impact Conference, AIAA paper, 69–354.

Masselink, G., and J. A. Puleo. 2006. Swash-zone morphodynamics, Cont. Shelf Res., 26(5), 661–680, doi:10.1016/j.csr.2006.01.015

Meyer-Peter, E., and R. Müller 1948. Formulas for bed-load transport.Proc. 2nd Congress of the Int. Ass Hydraulic Structures Research, Stockholm.

Nikuradse, J., 1932. Gesetzmässigkeit der turbulenten Strömung in glatten Rohren. VDIForschungsheft.

Puleo, J. A., T. Lanckriet, P. Qang 2012 Near bed cross-shore velocity profiles, bed shear stress and friction on the foreshore of a microtidal beach Coastal Engineering, 68, 6-16,

Zhu, F., N. Dodd, and R. Briganti. 2012. Impact of a uniform bore on an erodible beach, Coastal Engineering, 60, 326-333, doi:10.1016/j.coastaleng.2011.08.006.