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See detail3D Modelling of the Black Sea northwestern shelf ecosystem : Benthic Fluxes
Capet, Arthur ULiege; Grégoire, Marilaure ULiege

Scientific conference (2010, October)

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See detail3D modelling of the massive star binary systems Eta Carinae, WR 22, and WR 140
Parkin, E. R.; Pittard, J. M.; Corcoran, M. F. et al

in Bulletin de la Societe Royale des Sciences de Liege (2011), 80

Massive stars possess powerful stellar winds. Wind-wind collision in a massive star binary system generates a region of thermalized plasma which may emit prolifically at X-ray wavelengths. Results are ... [more ▼]

Massive stars possess powerful stellar winds. Wind-wind collision in a massive star binary system generates a region of thermalized plasma which may emit prolifically at X-ray wavelengths. Results are presented from 3D adaptive-mesh refinement (AMR) hydrodynamical models which include radiative cooling and the radiative driving of the stellar winds. The models provide an exceptional insight into the turbulent nature of the wind-wind interaction regions. The X-ray emission from the hydrodynamical models is then calculated, allowing detailed comparisons with observational data. Preliminary results from investigations of Eta Carinae, WR 22, and WR 140 are discussed. [less ▲]

Detailed reference viewed: 33 (1 ULiège)
See detail3D morphological characterization of silicon particles with X Ray tomography
Gregoire, Max; Cnudde, Veerle; Masschaele, B. et al

in Proceedings Belgian Soc Microscopy Meeting (2006)

Peer Reviewed
See detail3D nonrigid registration and multimodality fusion for image-guided neurosurgery
Verly, Jacques ULiege; Vigneron, Lara M.; Martin, Christophe et al

Conference (2003)

Detailed reference viewed: 11 (0 ULiège)
Peer Reviewed
See detailA 3D numerical model of the Northern Bering Sea
Nihoul, Jacques ULiege; Waleffe, Fabian; Djenidi, Salim ULiege

in Environmental Software (1986), 2

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See detail3D numerical models of FSW processes with noncylindrical pin
Bussetta, Philippe; Dialami, Narges; Chiumenti, Michele et al

in Advances in Materials and Processing Technologies (2016), 1(3-4), 275-287

Friction stir welding (FSW) process is a relatively recent welding process (patented in 1991). FSW is a solid-state joining process during which materials to be joined are not melted. During the FSW ... [more ▼]

Friction stir welding (FSW) process is a relatively recent welding process (patented in 1991). FSW is a solid-state joining process during which materials to be joined are not melted. During the FSW process, the behaviour of the material is at the interface between solid mechanics and fluid mechanics. In this paper, a 3D numerical model of the FSW process with a non-cylindrical tool based on a solid formulation is compared to another one based on a fluid formulation. Both models use advanced numerical techniques such as the arbitrary Lagrangian–Eulerian formulation, remeshing or the orthogonal subgrid scale method. It is shown that these two formulations essentially deliver the same results. [less ▲]

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See detail3D numerical models using a fluid or a solid formulation of FSW processes with non-cylindrical pin
Bussetta, Philippe; Dialami; Chiumenti, Michele et al

in Advanced Modeling and Simulation in Engineering Sciences (2015), 2(27),

Friction Stir Welding (FSW) process is a relatively recent welding process (patented in 1991). FSW is a solid-state joining process during which materials to be joined are not melted. During the FSW ... [more ▼]

Friction Stir Welding (FSW) process is a relatively recent welding process (patented in 1991). FSW is a solid-state joining process during which materials to be joined are not melted. During the FSW process, the behavior of the material is at the interface between solid mechanics and fluid mechanics. In this paper, a 3D numerical model of the FSW process with a non-cylindrical tool based on a solid formulation is compared to another one based on a fluid formulation. Both models use advanced numerical techniques such as the Arbitrary Lagrangian Eulerian (ALE) formulation, remeshing or the Orthogonal Sub-Grid Scale method (OSS). It is shown that these two formulations essentially deliver the same results. [less ▲]

Detailed reference viewed: 56 (13 ULiège)
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See detail3D particles characterization techniques – a review
Pirard, Eric ULiege

in International Fine Particle Research Institute (2005)

Detailed reference viewed: 21 (2 ULiège)
Peer Reviewed
See detail3D perfusion bioreactor culture of human periosteum derived stem cells for bone tissue engineering
Sonnaert, Maarten; Papantoniou, Ioannis; Bloemen, Veerle et al

Conference (2013)

Detailed reference viewed: 24 (1 ULiège)
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See detail3D periodic BE–FE model for various transportation structures interacting with soil
Chebli, Hamid; Othman, Ramzi; Clouteau, Didier et al

in Computers & Geotechnics (2008), 35(1), 22-32

A three-dimensional model for soil-transportation structures is presented. This model exploits the geometrical periodicity of the system and takes into account the dynamic soil–structure interaction with ... [more ▼]

A three-dimensional model for soil-transportation structures is presented. This model exploits the geometrical periodicity of the system and takes into account the dynamic soil–structure interaction with a methodology coupling a boundary element method for the soil and a finite element formulation for the structure. A general overview of this approach is given based on several real transportation structures. Moreover, comparative studies between the different structures have been carried out. Then the model is improved by introducing a general rule for the determination of the optimal number of cells. Finally, the periodic modes propagation is investigated offering a first seizing of the significant dynamical phenomena in the soil–structure system. [less ▲]

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See detail3D Probabilistic Representations for Vision and Action
Piater, Justus ULiege; Detry, Renaud ULiege

Conference (2008)

Detailed reference viewed: 26 (3 ULiège)
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See detail3D real-time auralization with separate rendering of direct sound, reflections and directional late reverberation
Lesoinne, Stéphane ULiege; Werner, Nicolas; Embrechts, Jean-Jacques ULiege

in Proceedings of the 2006 international Conference on Auditory Display (2006)

Detailed reference viewed: 48 (17 ULiège)
See detail3D reference information needs and their impacts on data production
Billen, Roland ULiege

Scientific conference (2011, November 25)

Detailed reference viewed: 15 (0 ULiège)
See detailLa 3D selon Alfred Hitchcock: Dial M for Murder
Tomasovic, Dick ULiege

Conference given outside the academic context (2014)

Analyse de la conception de la 3D dans le film d'Alfred Hitchcock, Dial M for Murder.

Detailed reference viewed: 17 (1 ULiège)
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See detail3D shape of asteroid (6)~Hebe from VLT/SPHERE imaging: Implications for the origin of ordinary H chondrites
Marsset, M.; Carry, B.; Dumas, C. et al

in Astronomy and Astrophysics (2017), 604

Context. The high-angular-resolution capability of the new-generation ground-based adaptive-optics camera SPHERE at ESO VLT allows us to assess, for the very first time, the cratering record of medium ... [more ▼]

Context. The high-angular-resolution capability of the new-generation ground-based adaptive-optics camera SPHERE at ESO VLT allows us to assess, for the very first time, the cratering record of medium-sized (D~100-200 km) asteroids from the ground, opening the prospect of a new era of investigation of the asteroid belt's collisional history. Aims. We investigate here the collisional history of asteroid (6) Hebe and challenge the idea that Hebe may be the parent body of ordinary H chondrites, the most common type of meteorites found on Earth (~34% of the falls). Methods. We observed Hebe with SPHERE as part of the science verification of the instrument. Combined with earlier adaptive-optics images and optical light curves, we model the spin and three-dimensional (3D) shape of Hebe and check the consistency of the derived model against available stellar occultations and thermal measurements. Results. Our 3D shape model fits the images with sub-pixel residuals and the light curves to 0.02 mag. The rotation period (7.274 47 h), spin (343 deg,+47 deg), and volume-equivalent diameter (193 +/- 6km) are consistent with previous determinations and thermophysical modeling. Hebe's inferred density is 3.48 +/- 0.64 g.cm-3 , in agreement with an intact interior based on its H-chondrite composition. Using the 3D shape model to derive the volume of the largest depression (likely impact crater), it appears that the latter is significantly smaller than the total volume of close-by S-type H-chondrite-like asteroid families. Conclusions. Our results imply that (6) Hebe is not the most likely source of H chondrites. Over the coming years, our team will collect similar high-precision shape measurements with VLT/SPHERE for ~40 asteroids covering the main compositional classes, thus providing an unprecedented dataset to investigate the origin and collisional evolution of the asteroid belt. [less ▲]

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See detail3D Shape Optimization with X-FEM and a Level Set Constructive Geometry Approach
Van Miegroet, Laurent ULiege; Duysinx, Pierre ULiege

in Proceeding of the 8th World Congress on Structural and Multidisciplinary Optimization (2009, June)

This paper extends previous work on structural optimization with the eXtended Finite Element Method (X-FEM) and the Level Set description of the geometry. The proposed method takes advantage of fixed mesh ... [more ▼]

This paper extends previous work on structural optimization with the eXtended Finite Element Method (X-FEM) and the Level Set description of the geometry. The proposed method takes advantage of fixed mesh approach by using an X-FEM structural analysis method and from the geometrical shape representation of the Level Set description. In order to allow the optimization of complex geometries represented with a Level Set description, we apply here a Constructive Solid Geometry (CSG) approach with the Level Set geometrical representation. Hence, this extension allows to optimize any boundary of the structure that is defined with a coumpound Level Set. Design variables are the parameters of basic geometric primitives which are described with a Level Set representation and/or the control points of the NURBS curves that act as the definition of an advanced Level Set primitive. The number of design variables of this formulation remains small whereas global (i.e. compliance or eigenfrequency) and local constraints (i.e. stresses) can be considered. Our results illustrate that fixed grid optimization with X-FEM coupled to a Level Set geometrical description is a promising technique to achieve structural shape optimization. [less ▲]

Detailed reference viewed: 279 (14 ULiège)
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See detail3D shape perception in posterior cortical atrophy: a visual neuroscience perspective
Gillebert, Céline; Schaeverbeke, J.; Bastin, Christine ULiege et al

in Journal of Neuroscience (2015), 35(37), 12673-12692

Detailed reference viewed: 72 (6 ULiège)
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See detail3D simulation of Industrial Hall in case of fire. Benchmark between ABAQUS, ANSYS and SAFIR
Vassart, Olivier; Cajot, Louis-Guy; O'Connor, Marc et al

in Interflam2004 Proceedings. Fire Sciences and Engineering Conference (2004, July)

For simple storey buildings, the structural behaviour in case of fire is relevant only for the safety of the firemen. The protection of occupants and goods is a matter of fire spread, smoke propagation ... [more ▼]

For simple storey buildings, the structural behaviour in case of fire is relevant only for the safety of the firemen. The protection of occupants and goods is a matter of fire spread, smoke propagation, active fire fighting measures and evacuation facilities. Brittle failure, progressive collapse and partial failure of façades elements outwards may endanger the fire fighters and have to be avoided. In order to deal with such an objective, the simulation softwares has to cover the 3D structural behaviour including membrane and restrained effects as well as the failure mode so that post-local failure stage can be analysed. Such calculation models (ANSYS, ABAQUS and SAFIR [1]) have been compared true a benchmark. In this benchmark, two different users used ABAQUS. [less ▲]

Detailed reference viewed: 254 (5 ULiège)
See detail3D spatial models and analysis
Billen, Roland ULiege

Scientific conference (2009, October 06)

Detailed reference viewed: 14 (0 ULiège)