References of "Dewals, Benjamin"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailIntegration of Accurate 2D Inundation Modelling, Vector Land Use Database and Economic Evaluation
Ernst, Julien ULg; Dewals, Benjamin ULg; Archambeau, Pierre ULg et al

Poster (2008, October 02)

Within the global framework of the climate change, according to most Regional Climate Mod-els the maximum peak discharges in river will increase in importance and frequency. Therefore the people will have ... [more ▼]

Within the global framework of the climate change, according to most Regional Climate Mod-els the maximum peak discharges in river will increase in importance and frequency. Therefore the people will have to face worst inundation conditions. In order to protect themselves from the increasing flood risk, the communities have to draw up suitable flood protection measures. The selection and the evaluation among the different possible flood mitigation measures requires developing decision-support system (DSS). This sys-tem has to take into consideration parameters such as hydraulic, economic, social or environmental. This pa-per focuses on the integration between two components of the DSS, namely the evaluation of the economic impacts of floods and the hydrodynamic modelling. The hydraulic simulations are conducted by means of WOLF 2D flow modelling system and provide as an output high resolution flood maps detailing the distribu-tion of water depth and flow velocity in the floodplains. The integration is ensured by the use of very accurate geographic databases and an automated procedure which makes the most of geomatic methods. The paper de-tails the application of the integrated assessment procedure for a case study along the river Ourthe located in the Meuse basin (Belgium). Moreover, possibilities of validation of the economic damage evaluation proce-dure are investigated by comparing computation results with real damage data recorded by the Belgian Disas-ter Fund after several major flood events (2003, 2002, 1995, and 1993). [less ▲]

Detailed reference viewed: 52 (15 ULg)
Full Text
Peer Reviewed
See detailModélisation hydrodynamique 2D et SIG à haute résolution pour l’évaluation de mesures de protection contre les inondations en milieu urbain
Ernst, Julien ULg; Dewals, Benjamin ULg; Archambeau, Pierre ULg et al

in 3e journées doctorales en hydrologie urbaine (2008, October)

Within the global framework of climate change, the majority of the regional climatic models (RCM - Regional Climatic Model) predict an increase in the frequency and importance of the rainy events ... [more ▼]

Within the global framework of climate change, the majority of the regional climatic models (RCM - Regional Climatic Model) predict an increase in the frequency and importance of the rainy events. Therefore, the populations will have to face an increased risk of flooding. In order to draw up suitable protection strategy in this context, decision-making tool must be developed to select the adequate mitigation measure among the whole of the possible protection measures. This system has to take into account parameters such as hydraulic economic, social or environmental. This paper focuses on the integration between the economic evaluation of the undergone damage and the two-dimensional hydrodynamic modelling implemented using the model WOLF 2D. The integration is ensured by the use of pointed geographical information systems and an automated procedure, based on the methods of geomatic, guaranteeing a perfect applicability of methodology for the analysis of urban areas. The whole of methodology is then applied to the evaluation of a measurement of adaptation to Ourthe (basin of the Meuse), namely the rehabilitation of an old channel formerly used to allow the river transport to the river. [less ▲]

Detailed reference viewed: 215 (28 ULg)
Full Text
Peer Reviewed
See detailSimulation numérique des écoulements mixtes hautement transitoires dans les conduits d’évacuation des eaux
Kerger, François ULg; Archambeau, Pierre ULg; Erpicum, Sébastien ULg et al

in Proceedings 3ème Journées Doctorales En Hydrologie Urbaine (2008, October)

Detailed reference viewed: 74 (27 ULg)
See detailCoupled vs uncoupled approaches for sediment transport modelling
Dewals, Benjamin ULg

Conference (2008, June 18)

Detailed reference viewed: 18 (2 ULg)
Peer Reviewed
See detailDam-break flow computation using high resolution DEM
Dewals, Benjamin ULg

Conference (2008, May 26)

Detailed reference viewed: 18 (2 ULg)
Full Text
See detailImproved one-dimensional numerical simulation of transient mixed flow in water pipes network
Kerger, François ULg; Archambeau, Pierre ULg; Erpicum, Sébastien ULg et al

in Proceedings of the 2nd ENVITAM PhD Day (2008, January 29)

Detailed reference viewed: 57 (15 ULg)
See detailHydrodynamic modelling, damage evaluation and technical adaptation measures
Dewals, Benjamin ULg

Conference (2008, January 10)

Detailed reference viewed: 5 (2 ULg)
Full Text
Peer Reviewed
See detailHétérogénéité des échelles spatio-temporelles d'écoulements hydrosédimentaires et modélisation numérique
Dewals, Benjamin ULg; Erpicum, Sébastien ULg; Archambeau, Pierre ULg et al

in Houille Blanche (2008), (5), 109-114

Les modèles numériques hydrosédimentaires doivent être aptes à prendre en compte la très grande hétérogénéité des échelles spatiales et surtout temporelles affectant les divers phénomènes à simuler. Pour ... [more ▼]

Les modèles numériques hydrosédimentaires doivent être aptes à prendre en compte la très grande hétérogénéité des échelles spatiales et surtout temporelles affectant les divers phénomènes à simuler. Pour ce faire, différents niveaux de couplage entre sous-modèles doivent être prévus (calcul hydrodynamique stationnaire, quasi stationnaire ou instationnaire complet). Outre une discussion du formalisme mathématique sous-jacent, la présente communication décrit le système de modélisation WOLF, développé à l’Université de Liège et permettant de couvrir la majorité des échelles de temps pertinentes au moyen d’approches numériques spécifiquement adaptées. L’applicabilité du système de modélisation est illustrée sur base de plusieurs exemples de simulations relatives à la conception et aux modes de gestion d’un grand ouvrage hydroélectrique en Inde. [less ▲]

Detailed reference viewed: 124 (47 ULg)
Full Text
Peer Reviewed
See detailModelling the vertical spincasting of large bimettalic rolling mill rolls
Studer, Léo ULg; Detrembleur, Sylvain ULg; Habraken, Anne ULg et al

in Proceedings of the Second International Conference on Advances in Solidification Processes (ICASP-2) (2008)

In order to take into account the dynamic effects of molten metal during solidification, a methodology is presented to interface a metal solidification solver with a specifically developped flow dynamics ... [more ▼]

In order to take into account the dynamic effects of molten metal during solidification, a methodology is presented to interface a metal solidification solver with a specifically developped flow dynamics solver. [less ▲]

Detailed reference viewed: 56 (13 ULg)
Full Text
Peer Reviewed
See detailIntegrated assessment of flood protection measures in the context of climate change: hydraulic modelling and economic approach
Dewals, Benjamin ULg; Giron, Eve; Ernst, Julien ULg et al

in Aravossis, K.; Brebbia, C. A.; Gomez, Nieves (Eds.) Environmental Economics (2008)

Detailed reference viewed: 62 (37 ULg)
Full Text
Peer Reviewed
See detailIntegrating hydraulic and economic analysis for selecting flood protection measures in the context of climate change
Ernst, Julien ULg; Dewals, Benjamin ULg; Giron, E. et al

in Proceedings of the 4th Int. Symp. on Flood Defence (pp. 133-1-133-9) (2008)

In order to protect our societies from damaging impacts of climate change (floods, heat waves, droughts…), the most cost-effective adaptation strategies must be selected among a wide range of options ... [more ▼]

In order to protect our societies from damaging impacts of climate change (floods, heat waves, droughts…), the most cost-effective adaptation strategies must be selected among a wide range of options (including structural and non-structural protection measures). The Belgian national project “ADAPT” aims to provide guidance for this choice by developing a decision-support system (DSS) for the selection of protection measures against increased risk resulting from climate change, and more specifically from floods. The DSS is based on a combination of cost-benefit analysis (CBA) and multi-criteria analysis (MA), taking into consideration hydraulic, economic, social and ecological indicators. For the purpose of demonstrating the relevance and efficiency of the DSS, the approach is applied for two case studies located in the two main Belgian river basins (Meuse and Scheldt). Within this global framework, the present paper covers the description of the hydrodynamic modeling component and the economic analysis, focusing on their interactions and on their integration within the DSS. The paper also details the case study of the Meuse Basin (river Ourthe), for which the hydraulic simulations are conducted by means of the two-dimensional numerical model WOLF 2D, based on a finite volume scheme and entirely developed at the University of Liege. High resolution Digital Surface Models and geographic database are exploited, enabling to represent streets, buildings and parcels individually. Relevant damage functions are validated and refined based on the analysis of four recent major flood events, for which a relationship may established between simulated local water depths (and possibly velocities or flow duration) and actual damage costs. Consequently, the combined hydrodynamic and economic analysis described in the paper may be judged as a valuable tool for assessing the effectiveness of specific flood protection measures. [less ▲]

Detailed reference viewed: 128 (15 ULg)
Full Text
Peer Reviewed
See detailAn experimental analysis of effects induced by moving bodies in shallow water
Kerger, François ULg; Detrembleur, Sylvain ULg; Archambeau, Pierre ULg et al

in Proc. 2nd International Junior Researcher and Engineer Workshop on Hydraulic Structures (2008)

Detailed reference viewed: 45 (17 ULg)