Micro-scale flood risk analysis based on detailed 2D hydraulic modelling and high resolution geographic data

Ernst, Julien; Dewals, Benjamin; Detrembleur, Sylvain; Archambeau, Pierre; Erpicum, Sébastien; Pirotton, Michel

doi:10.1007/s11069-010-9520-y

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Micro-scale flood risk analysis based on detailed 2D hydraulic modelling and high resolution geographic data

Ernst, Julien; Dewals, Benjamin; Detrembleur, Sylvain et al.

2010 • In Natural Hazards, 55 (2), p. 181-209

Peer reviewed

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https://hdl.handle.net/2268/35051

DOI
10.1007/s11069-010-9520-y

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Published online: 15 May 2010

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Abstract :

[en] The paper presents a consistent micro-scale flood risk analysis procedure, relying on detailed 2D inundation modelling as well as on high resolution topographic and land use database. The flow model is based on the shallow-water equations, solved by means of a finite volume scheme on multiblock structured grids. Using highly accurate laser altimetry, the simulations are performed with a typical grid spacing of 2m, which is fine enough to represent the flow at the scale of individual buildings. Consequently, the outcomes of hydraulic modelling constitute suitable inputs for the subsequent exposure analysis, performed at a micro-scale using detailed land use maps and geographic database. Eventually, the procedure incorporates social flood impact analysis and evaluation of direct economic damage to residential buildings. Besides detailing the characteristics and performance of the hydraulic model, the paper describes the flow of data within the overall flood risk analysis procedure and demonstrates its applicability by means of a case study, for which two different flood protection measures were evaluated.

Research Center/Unit :

Aquapôle - ULiège

Disciplines :

Civil engineering

Author, co-author :

Ernst, Julien ^✱; Université de Liège - ULiège > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH)

Dewals, Benjamin ^✱; Université de Liège - ULiège > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH)

Detrembleur, Sylvain ; Université de Liège - ULiège > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH)

Archambeau, Pierre ; Université de Liège - ULiège > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH)

Erpicum, Sébastien ; Université de Liège - ULiège > Département Argenco : Secteur MS2F > Hydraulique génér., const. hydraul. et méc. des fluides

Pirotton, Michel ; Université de Liège - ULiège > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH)

^✱ These authors have contributed equally to this work.

Language :

English

Title :

Micro-scale flood risk analysis based on detailed 2D hydraulic modelling and high resolution geographic data

Publication date :

15 May 2010

Journal title :

Natural Hazards

ISSN :

0921-030X

eISSN :

1573-0840

Publisher :

Springer Science & Business Media B.V.

Volume :

Issue :

Pages :

181-209

Peer reviewed :

Peer reviewed

Additional URL :

http://www.springerlink.com/content/l164518053178602/

Funders :

F.R.S.-FNRS - Fonds de la Recherche Scientifique
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique

Commentary :

J. Ernst, B. J. Dewals have contributed equally to this article.

Available on ORBi :

since 24 February 2010

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