Unpublished conference/Abstract (Scientific congresses and symposiums)
Shallow water model with anisotropic porosity for flood modelling on Cartesian grids
Bruwier, Martin; Archambeau, Pierre; Erpicum, Sébastien et al.
20174th International Symposium of Shallow Flows
 

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Keywords :
Shallow water; Cartesian grid; Urban floods
Abstract :
[en] Detailed topographic data have become widely available for inundation mapping. While the use of such high-resolution data enables the computation of flow variables at a fine scale, the computation time remains too high for many practical applications. In contrast, models solving the shallow-water equations with porosity provide a useful tool to improve the computational efficiency, while preserving to some extent the detailed topographic information through porosity parameters. In this study, we present a new model solving the fully dynamic shallow water equations with anisotropic porosity based on Cartesian grids. Using a Cartesian grid leads to specific challenges, particularly as regards the definition of the conveyance porosities at the cell edges. Moreover, the presented model is further improved by a merging method so as to increase the computational efficiency without affecting the overall accuracy. The performance of the model has been evaluated based on a wide range of test cases, which confirm the validity of the model and the benefits of such a modelling framework.
Disciplines :
Civil engineering
Author, co-author :
Bruwier, Martin ;  Université de Liège > Département ArGEnCo > Hydraulics in Environmental and Civil Engineering
Archambeau, Pierre  ;  Université de Liège > Département ArGEnCo > HECE (Hydraulics in Environnemental and Civil Engineering)
Erpicum, Sébastien  ;  Université de Liège > Scientifiques attachés au Doyen (Sc.appliquées)
Pirotton, Michel ;  Université de Liège > Département ArGEnCo > HECE (Hydraulics in Environnemental and Civil Engineering)
Dewals, Benjamin  ;  Université de Liège > Département ArGEnCo > Hydraulics in Environmental and Civil Engineering
Language :
English
Title :
Shallow water model with anisotropic porosity for flood modelling on Cartesian grids
Publication date :
June 2017
Event name :
4th International Symposium of Shallow Flows
Event organizer :
Eindhoven University Technology
Event place :
Eindhoven, Netherlands
Event date :
du 26 juin 2017 au 28 juin 2017
Audience :
International
Name of the research project :
ARC - Floodland
Funders :
ARC grant for Concerted Research Actions, financed by the Wallonia-Brussels Federation
Available on ORBi :
since 22 February 2017

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