Coastal morphodynamical modelling in nonlinear shallow water framework using a coordinate transformation method

Huynh, Van Long; Dodd, Nicholas; Zhu, Fangfang

Abstract

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 (CTM). An absorbing-generating seaward boundary condition in the transformed variables is also developed. The purely hydrodynamic component (NSWEs) is verifed against analytical results. The NSWEs plus advection equation is verifed quasi-analytical results. The fully-coupled model with bed change due to bed-load is verifed against a single swash event and long-term numerical simulation. Excellent agreement is observed in all verifcations.

Citation

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, https://doi.org/10.1016/j.advwatres.2017.07.003

• Journal Article Type: Article
• Acceptance Date: Jul 7, 2017
• Online Publication Date: Jul 8, 2017
• Publication Date: Sep 30, 2017
• Deposit Date: Jul 17, 2017
• Publicly Available Date: Jul 17, 2017
• Journal: Advances in Water Resources
• Print ISSN: 0309-1708
• Electronic ISSN: 0309-1708
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 107
• DOI: https://doi.org/10.1016/j.advwatres.2017.07.003
• Keywords: Coupled hydro-morphodynamic model, Coordinate transformation method, Non-breaking waves, Wetting-drying
• Public URL: https://nottingham-repository.worktribe.com/output/885638
• Publisher URL: http://www.sciencedirect.com/science/article/pii/S0309170817302749