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See detailA 3D Arbitrary Lagrangian Eulerian Formulation for the Numerical Simulation of Forming Processes. Application to cold roll forming and metal cutting
Boman, Romain ULiege; Papeleux, Luc ULiege; Viet, Bui Quoc et al

in Mota Soares, C. A. (Ed.) Proceedings of ECCM 2006, III European Conference on Computational Mechanics, Solids, Structures and Coupled Problems in Engineering (2006, June)

Detailed reference viewed: 57 (16 ULiège)
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See detail3D Audio Acquisition and Reproduction Systems
Evrard, Marc ULiege; André, Cédric ULiege; Embrechts, Jean-Jacques ULiege et al

Scientific conference (2011, February 23)

This presentation introduces two different research projects dealing with 3D audio for 3D-stereoscopic movies. The first project “3D audio acquisition for real time applications” studies the best method ... [more ▼]

This presentation introduces two different research projects dealing with 3D audio for 3D-stereoscopic movies. The first project “3D audio acquisition for real time applications” studies the best method for acquiring a full 3D audio soundscape on location and for processing it in real-time for further reproduction. The second project “Adding 3D sound to 3D cinema” is aimed towards the study of reproducing a 3D soundscape consistent with the visual content of a 3D-stereoscopic movie. These projects are linked together since they present both ends of the 3D audio chain. They are conducted as part of the “MEDIATIC – 3D MEDIA” project, which concerns the production, the processing, and the exploitation of rich audiovisual content, with a specific focus on 3D video imagery. [less ▲]

Detailed reference viewed: 181 (13 ULiège)
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See detail3D characterisation of the structure of activated carbon packed beds using X-ray microtomography
Almazan, Maria del Carmen; Léonard, Angélique ULiege; López-Garzón, J. et al

in 3rd International Workshop on Process Tomography (CD Rom) (2009, April)

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See detail3D City Models and urban information: current issues and perspectives
Billen, Roland ULiege; Cutting-Decelle, Anne-Françoise; Marina, Ognen et al

Book published by edpsciences (2014)

Considering sustainable development of cities implies investigating cities in a holistic way taking into account many interrelations between various urban or environmental issues. 3D city models are ... [more ▼]

Considering sustainable development of cities implies investigating cities in a holistic way taking into account many interrelations between various urban or environmental issues. 3D city models are increasingly used in different cities and countries for an intended wide range of applications beyond mere visualization. Could these 3D City models be used to integrate urban and environmental knowledge? How could they be improved to fulfill such role? We believe that enriching the semantics of current 3D city models, would extend their functionality and usability; therefore, they could serve as integration platforms of the knowledge related to urban and environmental issues allowing a huge and significant improvement of city sustainable management and development. But which elements need to be added to 3D city models? What are the most efficient ways to realize such improvement / enrichment? How to evaluate the usability of these improved 3D city models? These were the questions tackled by the COST Action TU0801” Semantic enrichment of 3D city models for sustainable urban development”. This book gathers various materials developed all along the four year of the Action and the significant breakthroughs. [less ▲]

Detailed reference viewed: 364 (24 ULiège)
See detail3D covariance of ordered mesoporous materials and its modelling with random cylinders
Gommes, Cédric ULiege; Friedrich, H; Wolters, M et al

Scientific conference (2008, February)

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See detail3D echocardiographic reference ranges for normal left ventricular volumes and strain: results from the EACVI NORRE study
BERNARD, Anne-Catherine ULiege; Addetia, K; DULGHERU, Raluca Elena ULiege et al

in European Heart Journal - Cardiovascular Imaging (2017)

Aim: To obtain the normal ranges for 3D echocardiography (3DE) measurement of left ventricular (LV) volumes, function, and strain from a large group of healthy volunteers. Methods and results: A total of ... [more ▼]

Aim: To obtain the normal ranges for 3D echocardiography (3DE) measurement of left ventricular (LV) volumes, function, and strain from a large group of healthy volunteers. Methods and results: A total of 440 (mean age: 45 ± 13 years) out of the 734 healthy subjects enrolled at 22 collaborating institutions of the Normal Reference Ranges for Echocardiography (NORRE) study had good-quality 3DE data sets that have been analysed with a vendor-independent software package allowing homogeneous measurements regardless of the echocardiographic machine used to acquire the data sets. Upper limits of LV end-diastolic and end-systolic volumes were larger in men (97 and 42 mL/m2) than in women (82 and 35 mL/m2; P < 0.0001). Conversely, lower limits of LV ejection fraction were higher in women than in men (51% vs. 50%; P < 0.01). Similarly, all strain components were higher in women than in men. Lower range was -18.6% in men and -19.5% in women for 3D longitudinal strain, -27.0% and -27.6% for 3D circumferential strain, -33.2% and -34.4% for 3D tangential strain and 38.8% and 40.7% for 3D radial strain, respectively. LV volumes decreased with age in both genders (P < 0.0001), whereas LV ejection fraction increased with age only in men. Among 3DE LV strain components, the only one, which did not change with age was longitudinal strain. Conclusion: The NORRE study provides applicable 3D echocardiographic reference ranges for LV function assessment. Our data highlight the importance of age- and gender-specific reference values for both LV volumes and strain. [less ▲]

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See detail3D electrical resistivity tomography of karstified formations using cross-line measurements
Van Hoorde, Maurits; Hermans, Thomas ULiege; Dumont, Gaël ULiege et al

in Engineering Geology (2017), 220

The acquisition of a full 3D survey on a large area of investigation is difficult, and from a practitioner’s point of view, very costly. In high-resolution 3D surveys, the number of electrodes increases ... [more ▼]

The acquisition of a full 3D survey on a large area of investigation is difficult, and from a practitioner’s point of view, very costly. In high-resolution 3D surveys, the number of electrodes increases rapidly and the total number of electrode combinations becomes very large. In this paper, we propose an innovative 3D acquisition procedure based on the roll-along technique. It makes use of 2D parallel lines with additional cross-line measurements. However, in order to increase the number of directions represented in the data, we propose to use cross-line measurements in several directions. Those cross-line measurements are based on dipole-dipole configurations as commonly used in cross-borehole surveys. We illustrate the method by investigating the subsurface geometry in a karstic environment for a future wind turbine project. We first test our methodology with a numerical benchmark using a synthetic model. Then, we validate it through a field case application to image the 3D geometry of karst features and the top of unaltered bedrock in limestone formations. We analyze the importance of cross-line measuring and analyze their capability for accurate subsurface imaging. The comparison with standard parallel 2D surveys clearly highlighted the added value of the cross-lines measurements to detect those structures. It provides crucial insight in subsurface geometry for the positioning of the future wind turbine foundation. The developed method can provide a useful tool in the design of 3D ERT survey to optimize the amount of information collected within a limited time frame. [less ▲]

Detailed reference viewed: 56 (12 ULiège)
See detailLa 3D en géomatique : des instruments de gestion derrière les images
Billen, Roland ULiege

Conference given outside the academic context (2015)

Detailed reference viewed: 29 (3 ULiège)
See detail3D ERT monitoring of the reactivation of waste biodegradation with fresh leachate injection
Dumont, Gaël ULiege; Robert, Tanguy ULiege; Pilawski, Tamara et al

Conference (2013, December 04)

The aim of this study is to monitor (bio) physical processes occurring in a landfill. The experiment consists in injecting leachate towards a drain in unsaturated and not yet digested waste to reactivate ... [more ▼]

The aim of this study is to monitor (bio) physical processes occurring in a landfill. The experiment consists in injecting leachate towards a drain in unsaturated and not yet digested waste to reactivate (or activate) waste biodegradation. The target is the first 15 meters of the studied landfill subsurface. The visualization of the wet front arrival (short term effect) is crucial because we want to ensure that waste is entirely humidified to allow the reactivation of waste digestion. The second process is a long term effect consisting in the increase of the internal temperature of the landfill which is synonymous of the reactivation of biodegradation processes. We use 3D time-lapse ERT on a monthly basis to capture the decrease of electrical resistivity related to the increasing temperature. We also collect ground truth data, including distributed temperatures in a borehole to validate results. For short term effects, we monitored the wet front arrival with three 2D ERT profiles composing the 3D image, during an entire day. Preliminary results, corroborated by ground truth data, show that leachate flow in anisotropic (more rapid horizontally than vertically). So far, waste was completely humidified and slight changes of temperature occurred. [less ▲]

Detailed reference viewed: 41 (10 ULiège)
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See detail3D ERT Monitoring of the Reactivation of Waste Biodegradation with Fresh Leachate Injection
Robert, Tanguy ULiege; Dumont, Gaël ULiege; Pilawski, Tamara ULiege et al

in EarthDoc - Near Surface Geoscience 2013 – 19th European Meeting of Environmental and Engineering Geophysics (2013, September 11)

Detailed reference viewed: 42 (13 ULiège)
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See detail3D EXPLORATION OF PERCOLATED POROSITY IN VIRTUAL CONCRETE
Stroeven, Piet; Le, L. B. N.; He, Huan ULiege

(2011, October)

The paper introduces two novel methods developed for porosimetry in DEM-produced virtual concrete. Inspiration came from robotics. Some available methods like quantitative image analysis render possible ... [more ▼]

The paper introduces two novel methods developed for porosimetry in DEM-produced virtual concrete. Inspiration came from robotics. Some available methods like quantitative image analysis render possible assessment of porosity and 3D pore size distribution. For durability applications it is necessary also to know the fraction of porosity that is continuous (percolated). This can be easily obtained from the methods introduced herein. [less ▲]

Detailed reference viewed: 46 (1 ULiège)
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See detail3D FEM/XFEM-based Biomechanical Brain Modeling for Preoperative Image Update
Vigneron, Lara; Boman, Romain ULiege; Robe, Pierre ULiege et al

in Miller, Karol; Paulsen, Keith D.; Young, Alistair A. (Eds.) et al MICCAI 2007 Workshop Proceedings : Computational Biomechanics for Medicine II (2007, November)

We present an end-to-end system for updating 3D preoperative images in the presence of brain shift and successive resections. The tissue discontinuities due to resections are handled via the eXtented ... [more ▼]

We present an end-to-end system for updating 3D preoperative images in the presence of brain shift and successive resections. The tissue discontinuities due to resections are handled via the eXtented Finite Element Method (XFEM), which has the appealing feature of handle arbitrarily-shaped discontinuity without any remeshing. The main novelty of the paper lies in the use of XFEM in 3D. [less ▲]

Detailed reference viewed: 89 (12 ULiège)
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See detail3D Finite Element Analysis of Axial Flux Permanent Magnet Motors with Dual Formulations
Ferreira da Luz, M.; Dular, Patrick ULiege; Sadowski, N. et al

in Proceedings of the 10th International IGTE Symposium on Numerical Field Calculation in Electrical Engineering (2002)

Detailed reference viewed: 51 (3 ULiège)
See detail3D finite element computation of a linear transverse flux actuator
Deliège, Geoffrey ULiege; Vande Sande, Hans; Hameyer, Kay et al

in International conference on Power electronics, machines and drives, Bath, UK, April 16-18, 2002 (2002)

Detailed reference viewed: 26 (0 ULiège)
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See detail3D Finite Element Modeling of Miscible Pollutant Transport by Groundwater in Saturated Zones.
Charlier, Robert ULiege; Radu, Jean-Pol ULiege; Biver, P. et al

in Congrès National Belge de Mécanique Théorique et Appliquée (1994)

Detailed reference viewed: 17 (1 ULiège)
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See detail3D finite‐element modeling for the magnetization of bulk high‐Tc drilled superconductors
Lousberg, Grégory ULiege

Poster (2008, August)

Article associé : Numerical simulation of the magnetization of high-temperature superconductors: a 3D finite element method using a single time-step iteration

Detailed reference viewed: 29 (9 ULiège)
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See detail3D flow and transport groundwater modelling including river interactions
Carabin, Guy; Dassargues, Alain ULiege; Brouyère, Serge ULiege

in Burganos, V. N.; Karatzas, G. P.; Payatakes, A. C. (Eds.) et al Computational Methods in Water Resources XII, Vol. 1: Computational Methods in Contamination and Remediation of Water Resources (1998)

Detailed reference viewed: 53 (6 ULiège)
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See detail3D fully coupled multiphase modelling of Ekofisk reservoir
Ringlet, Clémence; Charlier, Robert ULiege; Schroeder, Christian ULiege et al

in Shao, Jian-Fu; Burlion, Nicolas (Eds.) Thermo-hydromechanical and chemical Coupling in Geomaterials and Applications (2008)

During reservoir production, the depletion usually induces a compaction of the reservoir layers. To enhance oil recovery, waterflooding operations are generally performed but, in the North Sea chalk ... [more ▼]

During reservoir production, the depletion usually induces a compaction of the reservoir layers. To enhance oil recovery, waterflooding operations are generally performed but, in the North Sea chalk reservoir, they have also induced an additional compaction. This latter phenomenon has a positive impact (improve the ‘Compaction drive’ oil recovery) but endangers the offshore platforms and causes huge extra costs. The coupling effects between mechanical behaviour and fluids flow are thus a key issue in petroleum engineering. Pasachalk program I & II have proposed a constitutive model (referred as Pasachalk model), where the suction is the key parameter to explain the water weakening effect. This model has been used for the modelling of waterflooding experiment on chalk plug and bi-dimensional reservoir. However, as the reservoir modelling is actually a 3D model, the purpose of this paper is to present 3D fully coupled modelling of a simplified Ekofisk reservoir during production and waterflooding phases. In order to exhibit the influence of the constitutive mechanical model, different studies are performed: increasing the complexity of the mechanical model (from an elastic model up to the Pasachalk one with suction effect). The numerical results show the influence of the mechanical law on the oil production and exhibit that only an elasto-plastic law with suction effects succeeds to reproduce compactions during both production and waterflooding. [less ▲]

Detailed reference viewed: 245 (28 ULiège)
See detail3D h-phi finite element formulation for the computation of a linear transverse flux actuator
Deliège, Geoffrey ULiege; Henrotte, François; Vande Sande, Hans et al

in 15th International conference on electrical machines (ICEM), Brugge, Belgium, August 25-28, 2002 (2002)

Detailed reference viewed: 39 (2 ULiège)