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See detailModélisation du phénomène de contact unilatéral avec frottement dans un contexte de grandes déformations
Charlier, Robert ULg; Cescotto, Serge ULg

in Journal de Mécanique Théorique et Appliquée (1988), 7(Suppl. 1), 177-192

Detailed reference viewed: 93 (10 ULg)
See detailModélisation du transfert des radionucléides
Everbecq, Etienne ULg; Smitz, Joseph ULg

in Kirchmann, René (Ed.) "La radioécologie des grands fleuves : des données de sites et de l'expérimentation à la modélisation". (Application à la Meuse et au Rhône). (1992)

Ce rapport fait le point sur l'impact des installations nucléaires sur deux écosystèmes fluviaux tempérés, au terme de 25 années d'étude pour la Meuse et d'une quinzaine pour le Rhone. Dans ce cadre, un ... [more ▼]

Ce rapport fait le point sur l'impact des installations nucléaires sur deux écosystèmes fluviaux tempérés, au terme de 25 années d'étude pour la Meuse et d'une quinzaine pour le Rhone. Dans ce cadre, un modèle déterministe a été élaboré et appliqué à la Meuse pour simuler la contamination par le radiocésium de l'eau, des sédiments et d'un "poisson type" (la carpe) [less ▲]

Detailed reference viewed: 5 (0 ULg)
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See detailModélisation du transfert du Cs-137 de l'eau vers le phytoplancton et simulation des expérimentations de laboratoire
Smitz, Joseph ULg; Everbecq, Etienne ULg; Comeliau, B.

in Annales de l'Association Belge de Radioprotection = Annalen van de Belgische Vereniging voor Stralingsbescherming (1987), 12(2-3), 171-204

La modélisation du phénomène de contamination/décontamination du système eau/algues par la Césium 137 a été réalisée sur base d'expériences de laboratoire. Elle a permis de mettre en évidence l'influence ... [more ▼]

La modélisation du phénomène de contamination/décontamination du système eau/algues par la Césium 137 a été réalisée sur base d'expériences de laboratoire. Elle a permis de mettre en évidence l'influence des diverses conditions d'expérimentation et a montré que le facteur de transfert à l'équilibre dépend de ces conditions d'expérimentation [less ▲]

Detailed reference viewed: 9 (1 ULg)
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See detailModélisation du transfert radiatif en forêts feuillues ardennaises : adaptation de la librairie Samsaralight
Ligot, Gauthier ULg; Jonard, Mathieu; de Coligny, François et al

Conference (2013, April 08)

Detailed reference viewed: 19 (5 ULg)
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See detailModélisation écologique d'une rivière en vue de l'optimisation de l'épuration
Lecomte-Beckers, Jacqueline ULg

in Revue IRE (1979), 3[6]

Ce travail traite la modélisation mathématique du phénomène de biodégradation naturelle des matières polluantes organiques provenant d'effluents urbains et industriels, appliqués au cas de la Sambre.

Detailed reference viewed: 25 (7 ULg)
See detailModélisation en hydrogéologie
Dassargues, Alain ULg

Book published by Ed. Didac. et Pédag. R.A. (1995)

Detailed reference viewed: 53 (12 ULg)
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See detailModélisation en hydrogéologie - De modelisatie in de hydrogeologie
Dassargues, Alain ULg; Vander Velpen, B.; Vercruysse, J.

in BLUG Tijdschrift - Revue de l'UBLG (1996)

Detailed reference viewed: 89 (6 ULg)
See detailLa modélisation en transport.
Marchal, Jean ULg

Learning material (1992)

Detailed reference viewed: 35 (4 ULg)
See detailModélisation et contrôle d'un mini-drone de type rotor caréné
Depouhon, Alexandre ULg

Master's dissertation (2006)

Detailed reference viewed: 34 (2 ULg)
Peer Reviewed
See detailModélisation et influence des contraintes résiduelles dans les profils métalliques soumis à l'incendie
Franssen, Jean-Marc ULg

in Construction Métallique (1989), 3

This paper explains how residual stresses have to be taken into account in the numerical modelling of steel profiles subjected to fire, namely by means of initial strains. It also shows that they ... [more ▼]

This paper explains how residual stresses have to be taken into account in the numerical modelling of steel profiles subjected to fire, namely by means of initial strains. It also shows that they influence the fire resistance of steel elements only in axially loaded columns. [less ▲]

Detailed reference viewed: 38 (1 ULg)
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See detailModélisation et résolution du problème de contact mécanique et son application dans un contexte multiphysique
Bussetta, Philippe ULg

Doctoral thesis (2009)

The mechanical contact is the problem of solids mechanics that presents the most difficult nonlinearity. The good resolution of the frictional contact problem is disrupted by the noniineaxity and the non ... [more ▼]

The mechanical contact is the problem of solids mechanics that presents the most difficult nonlinearity. The good resolution of the frictional contact problem is disrupted by the noniineaxity and the non differentiability of the contact's equations (stick/unstick and the initiation of sliding). Until now, no method could be used to resolve all contact problems. This work is focused on the methods of calculation of the mechanical contact in a more general way. It could be separated in two parts. The first one concerns the creation of the systems of equations and the algorithm of resolution. The methods more used are the Penalty Method and Lagrangian Augmented Method. Although these methods are simple, they are very difficult to use because the choice of the value of penalty coefficients (normal and tangential). For this reason, a new method, the "Lagrangian Augmented Adapted Method" is proposed. This new method is based on the Lagrangian Augmented Method and on the adaptation of the penalty coefficients. With it, the user does not need to choose the value of penalty coefficients. In addition, this method has the speed of the Penalty Method and the reliability of the Lagrangian Augmented Method. The second part of this work deals with the calculation of the mechanical contact under a spatial disctretization. The method more used is the "Point-Surface" Method. The contact is calculated between every point of one surface and the other surface. This method has many limits, as the representativeness and the regularity of the solution when the boundaries are deformable and irregular. Many researches are done on another method, the "Surface-Surface" Method based on the Mortar Element Method. The mechanical contact is calculated on each node of one surface in function of the two surfaces. With this method the solution is more regular and reliable. But the calculation of the mechanical contact is more difficult, so it can not be used to the three dimensional problems. An adaptation of this method has been proposed to the two and three dimensional problems. All these methods are tested on some academics and industrials multi-physical problems. [less ▲]

Detailed reference viewed: 98 (14 ULg)
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See detailModélisation hédonique des prix immobiliers : quelles opportunités pour la collectivité ?
Halleux, Jean-Marie ULg

in Revue trimestrielle pour le géomètre-expert (2009), 62

Detailed reference viewed: 83 (14 ULg)
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See detailModélisation hydraulique detaillée d’inondations extrêmes sur un tronçon transnational de la Meuse
Dewals, Benjamin ULg; Archambeau, Pierre ULg; Erpicum, Sébastien ULg et al

in Evènements extrêmes d’inondation : de l’étude de l’aléa à la gestion du risque pour les ouvrages hydrauliques (2013)

Extreme floods of the river Meuse were simulated based on a detailed 2D unsteady hydraulic model. As part of a coordinated transnational modeling program, the study area considered here extends from ... [more ▼]

Extreme floods of the river Meuse were simulated based on a detailed 2D unsteady hydraulic model. As part of a coordinated transnational modeling program, the study area considered here extends from Ampsin (Belgium) to the Belgian-Dutch border. The results of the present simulations are passed as upstream boundary condition to a second hydraulic model simulating the same flood scenarios in the Meuse in the Netherlands. In the simulations discussed here for the Belgian part of the Meuse, high accuracy and high resolution data were used to represent the main riverbed and the urbanized floodplains. The operation of all influencing mobile dams was represented in the model. The considered flood scenarios include the 100-year flood in the present situation (Q100), as well as two more extreme floods: Q100 + 15 % and Q100 + 30 %. These values correspond to return periods of the order of, respectively 300 and 1000 years in the present climate; but, according to a transnational climate change scenario in the Meuse basin, they may also be considered as estimates of the 100-year flood in 2050 and 2100. The computations have shown a very limited damping of the flood wave in the study area, not exceeding approximately 1 % of the peak discharge for Q100 and Q100 + 15 %, and reaching about 3 % for Q100 + 30 %. Compared to Q100, increases in the flood levels for Q100 + 15 % and Q100 + 30 % are, respectively, in the ranges 0.5-0.9 m and 1.0-1.8 m. Comparisons with the results from previous steady simulations revealed discrepancies not exceeding 5 cm for Q100 and Q100 + 15 %, and reaching a maximum of approximately 30 cm for Q100 + 30 %. Hence, from the perspective of the variation in peak discharge and flood levels, the study concludes that running the hydraulic model in steady mode is reasonable; although some differences occur in terms of inundation extents. The 2D unsteady model constitutes also a tool of primary interest, which is readily available to design and evaluate protection measures for flood-prone areas such as in the city of Liege. [less ▲]

Detailed reference viewed: 65 (7 ULg)
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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: 189 (25 ULg)
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See detailModélisation hydrodynamique des zones inondables en Région wallonne
Pirotton, Michel ULg; Erpicum, Sébastien ULg; Dewals, Benjamin ULg et al

in Cahiers de l'Urbanisme (Les) (2006)

Detailed reference viewed: 39 (5 ULg)
Peer Reviewed
See detailModélisation hydrodynamique et biologique tri-dimensionnelle d'une zone côtière: application à la baie de Cannes-Mandelieu.
Lagasse, Bernadette; Sciandra, Antoine; Djenidi, Salim ULg et al

in Chamley, Hervé (Ed.) Environnement des Mers Epicontinentales (1990)

Detailed reference viewed: 10 (1 ULg)