Research Repository

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Quasi-exact solution of the Riemann problem for generalised dam-break over a mobile initially flat bed (2019)
Journal Article
Zhu, F., & Dodd, N. (in press). Quasi-exact solution of the Riemann problem for generalised dam-break over a mobile initially flat bed. Journal of Engineering Mathematics,

This paper investigates dam-break problems with flows on one or two sides of zero or nonzero velocities over a mobile initially flat bed, and quasi-exact solutions are presented by solving the Riemann problems using the simple wave theory. The flow s... Read More

Surface-groundwater flow numerical model for barrier beach with exfiltration incorporated bottom boundary layer model (2018)
Journal Article
Perera, E., Zhu, F., Dodd, N., Briganti, R., Blenkinsopp, C., & Turner, I. L. (2018). Surface-groundwater flow numerical model for barrier beach with exfiltration incorporated bottom boundary layer model. Coastal Engineering Journal, doi:10.1016/j.coastaleng.2018.12.002

A surface-groundwater flow model is developed for the swash flow on a barrier beach. The non-linear shallow water equations are used to simulate the surface flow. Laplace's equation is used to describe the groundwater flow and is solved using the Bou... Read More

Numerical modelling of the flow and bed evolution of a single bore-driven swash event on a coarse sand beach (2018)
Journal Article
Briganti, R., Dodd, N., Incelli, G., & Kikkert, G. (2018). Numerical modelling of the flow and bed evolution of a single bore-driven swash event on a coarse sand beach. Coastal Engineering, doi:10.1016/j.coastaleng.2018.09.006. ISSN 0378-3839

This paper examines the numerical prediction of the sediment transport and bed evolution for a single swash event on a coarse sediment beach. In these conditions bed load is the dominant mode of sediment transport. Laboratory experiments of a single... Read More

Riemann solution for a class of morphodynamic shallow water dam-break problems (2017)
Journal Article
Zhu, F., & Dodd, N. (2018). Riemann solution for a class of morphodynamic shallow water dam-break problems. Journal of Fluid Mechanics, 835, doi:10.1017/jfm.2017.794. ISSN 0022-1120

This paper investigates a family of dam-break problems over an erodible bed. The hydrodynamics are described by the shallow water equations, and the bed change by a sediment conservation equation, coupled to the hydrodynamics by a sediment transport... Read More

Coastal morphodynamical modelling in nonlinear shallow water framework using a coordinate transformation method (2017)
Journal Article
Huynh, V. L., Dodd, N., & Zhu, F. (2017). Coastal morphodynamical modelling in nonlinear shallow water framework using a coordinate transformation method. Advances in Water Resources, 107, doi:10.1016/j.advwatres.2017.07.003. ISSN 0309-1708

A 1D numerical model of Nonlinear Shallow Water Equations (NSWEs) coupled to an advection equation for suspended sediment and a bed evolution equation is developed. The moving boundary at the shoreline is treated by a coordinate transformation method... Read More

Intra-swash hydrodynamics and sediment flux for dambreak swash on coarse-grained beaches (2016)
Journal Article
O'Donoghue, T., Kikkert, G. A., Pokrajac, D., Dodd, N., & Briganti, R. (2016). Intra-swash hydrodynamics and sediment flux for dambreak swash on coarse-grained beaches. Coastal Engineering, 112, doi:10.1016/j.coastaleng.2016.03.004. ISSN 0378-3839

The paper reports on dambreak-type swash experiments in which intra-swash hydrodynamics and sediment flux are measured for swash on a coarse sand beach and a gravel beach. Flow velocity and depth are measured using PIV and LIF respectively; the intra... Read More

Morphodynamical modelling of field-scale swash events (2015)
Journal Article
Incelli, G., Dodd, N., Blenkinsopp, C. E., Zhu, F., & Briganti, R. (2016). Morphodynamical modelling of field-scale swash events. Coastal Engineering, 115, doi:10.1016/j.coastaleng.2015.09.006. ISSN 0378-3839

In the present work, data for three single swash events are selected from those available for an accretive tide that occurred at Le Truc Vert beach (France) during a measurement field campaign at that location. These events are primarily chosen becau... Read More

Understanding coastal morphodynamic patterns from depth-averaged sediment concentration (2015)
Journal Article
Ribas, F., Falques, A., De Swart, H. E., Dodd, N., Garnier, R., & Calvete, D. (in press). Understanding coastal morphodynamic patterns from depth-averaged sediment concentration. Reviews of Geophysics, 53(2), doi:10.1002/2014RG000457. ISSN 8755-1209

This review highlights the important role of the depth-averaged sediment concentration (DASC) to understand the formation of a number of coastal morphodynamic features that have an alongshore rhythmic pattern: beach cusps, surf zone transverse and cr... Read More

Absorbing–generating seaward boundary conditions for fully-coupled hydro-morphodynamical solvers (2015)
Journal Article
Incelli, G., Briganti, R., & Dodd, N. (2015). Absorbing–generating seaward boundary conditions for fully-coupled hydro-morphodynamical solvers. Coastal Engineering, 99, doi:10.1016/j.coastaleng.2015.02.002. ISSN 0378-3839

This paper presents a new technique to compute open boundary conditions for fully-coupled hydro-morphodynamical numerical solvers based on the Non-Linear Shallow Water and the Exner equations. These conditions allow the generation of incident signals... Read More

The morphodynamics of a swash event on an erodible beach (2014)
Journal Article
Zhu, F., & Dodd, N. (2015). The morphodynamics of a swash event on an erodible beach. Journal of Fluid Mechanics, 762, doi:10.1017/jfm.2014.610. ISSN 0022-1120

A high-accuracy numerical solution, coupling one-dimensional shallow water and bed-evolution equations, with, for the first time, a suspended sediment advection equation, thereby including bed and/or suspended load, is used to examine two swash event... Read More