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

Van Long Huynh; Nicholas Dodd; Fangfang Zhu

doi:10.1016/j.advwatres.2017.07.003

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

Van Long Huynh, Nicholas Dodd, Fangfang Zhu

Department of Civil Engineering

Research output: Journal Publication › Article › peer-review

2 Citations (Scopus)

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 verified against analytical results. The NSWEs plus advection equation is verified quasi-analytical results. The fully-coupled model with bed change due to bed-load is verified against a single swash event and long-term numerical simulation. Excellent agreement is observed in all verifications.

Original language	English
Pages (from-to)	326-335
Number of pages	10
Journal	Advances in Water Resources
Volume	107
DOIs	https://doi.org/10.1016/j.advwatres.2017.07.003
Publication status	Published - Sept 2017

Keywords

Coordinate transformation method
Coupled hydro-morphodynamic model
Non-breaking waves
Wetting-drying

ASJC Scopus subject areas

Water Science and Technology

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10.1016/j.advwatres.2017.07.003

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@article{927cf498b9be4b5e994bce4fdd19d19e,

title = "Coastal morphodynamical modelling in nonlinear shallow water framework using a coordinate transformation method",

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 verified against analytical results. The NSWEs plus advection equation is verified quasi-analytical results. The fully-coupled model with bed change due to bed-load is verified against a single swash event and long-term numerical simulation. Excellent agreement is observed in all verifications.",

keywords = "Coordinate transformation method, Coupled hydro-morphodynamic model, Non-breaking waves, Wetting-drying",

author = "{Long Huynh}, Van and Nicholas Dodd and Fangfang Zhu",

note = "Publisher Copyright: {\textcopyright} 2017 The Authors",

year = "2017",

month = sep,

doi = "10.1016/j.advwatres.2017.07.003",

language = "English",

volume = "107",

pages = "326--335",

journal = "Advances in Water Resources",

issn = "0309-1708",

publisher = "Elsevier Ltd.",

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TY - JOUR

T1 - Coastal morphodynamical modelling in nonlinear shallow water framework using a coordinate transformation method

AU - Long Huynh, Van

AU - Dodd, Nicholas

AU - Zhu, Fangfang

PY - 2017/9

Y1 - 2017/9

N2 - 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 verified against analytical results. The NSWEs plus advection equation is verified quasi-analytical results. The fully-coupled model with bed change due to bed-load is verified against a single swash event and long-term numerical simulation. Excellent agreement is observed in all verifications.

AB - 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 verified against analytical results. The NSWEs plus advection equation is verified quasi-analytical results. The fully-coupled model with bed change due to bed-load is verified against a single swash event and long-term numerical simulation. Excellent agreement is observed in all verifications.

KW - Coordinate transformation method

KW - Coupled hydro-morphodynamic model

KW - Non-breaking waves

KW - Wetting-drying

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U2 - 10.1016/j.advwatres.2017.07.003

DO - 10.1016/j.advwatres.2017.07.003

M3 - Article

AN - SCOPUS:85023771004

SN - 0309-1708

VL - 107

SP - 326

EP - 335

JO - Advances in Water Resources

JF - Advances in Water Resources

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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