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Benchmarking of flood inundation extent using various dynamically linked one- and two-dimensional approaches

Ahmadian, Reza, Falconer, Roger Alexander and Wicks, Jon 2018. Benchmarking of flood inundation extent using various dynamically linked one- and two-dimensional approaches. Journal of Flood Risk Management 11 (S1) , S314-S328. 10.1111/jfr3.12208

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Abstract

An accurate representation of linking processes between one-dimensional (1-D) and two-dimensional (2-D) models is of particular importance for many flood- modelling projects. This paper provides a comparison of 1-D/2-D linking methods used to simulate a hypothetical embankment failure. Comparisons were made by implementing 1-D/2-D linked models using two different 1-D/ 2-D linking methods, namely water levels and discharges, using both the alter- nating direction implicit (ADI) and total variation diminishing (TVD) 2-D numerical schemes widely used in flood models such as Flood Modeller Pro (http://www.floodmodeller.com). The flood inundation levels and extent pre- dicted by each numerical scheme were similar when the discharge method was used to link the models, whereas they were dependent on the numerical scheme when the water-level method was used. Consequently, where decisions affecting public safety are informed by the modelling, such as evacuation following a breach, it is recommended that the discharge-linking method should be used for linking models

Item Type: Article
Date Type: Publication
Status: Published
Schools: Advanced Research Computing @ Cardiff (ARCCA)
Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Publisher: Wiley
ISSN: 1753-318X
Date of First Compliant Deposit: 30 March 2016
Date of Acceptance: 10 August 2015
Last Modified: 10 Jul 2018 16:02
URI: http://orca-mwe.cf.ac.uk/id/eprint/80556

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