References of "Caps, Hervé"
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See detailInteraction between electrically charged droplets in microgravity
bandenbourger, martin; Caps, Hervé ULiege; hardouin, jerome et al

Conference (2015)

Detailed reference viewed: 9 (2 ULiège)
Peer Reviewed
See detailOscillating dynamics of a bubble immersed in an electrical field
Caps, Hervé ULiege; hardouin, jerome

Conference (2015)

Detailed reference viewed: 12 (2 ULiège)
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See detailOptical cryostat for macro/microscopic cryogenic flows visualisation
dubois, charles; duchesne, alexis; Caps, Hervé ULiege

Conference (2015)

Detailed reference viewed: 9 (0 ULiège)
See detailSliding bubbles on a hot horizontal wire in a subcooled bath
Duchesne, Alexis; Dubois, Charles; Caps, Hervé ULiege

Conference (2015)

Detailed reference viewed: 10 (0 ULiège)
See detailA cryostat device for liquid nitrogen convection experiments
Dubois, charles; Duchesne, Alexis; Caps, Hervé ULiege

Conference (2015)

Detailed reference viewed: 9 (2 ULiège)
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See detailFoams in a rotating drum: An analogy with granular materials
Bronfort, Ariane ULiege; Caps, Hervé ULiege

in Colloids and Surfaces A : Physicochemical and Engineering Aspects (2015)

Rotating drums are usually used to study the flowing properties of granular materials. Here, we report experiments performed in a drum made of a circular Hele-Shaw cell filled with a monodisperse foam and ... [more ▼]

Rotating drums are usually used to study the flowing properties of granular materials. Here, we report experiments performed in a drum made of a circular Hele-Shaw cell filled with a monodisperse foam and its surfactant solution. The cell is placed vertically and rotated around its center with an angular velocity ω. The rotation of the cell modifies the foam properties and therefore influences its response to the external strain. The observed foam behavior is similar to granular media in several aspects. Using tools developed for granular materials, we characterize the foam evolution in terms of a dimensionless viscous number I f and we compare the foam rheology to the theory developed for the immersed granular material rheology. © 2015 Elsevier B.V. [less ▲]

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See detailSurface tension profiles in vertical soap films
Adami, N.; Caps, Herve ULiege

in Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics (2015), 91(1),

Surface tension profiles in vertical soap films are experimentally investigated. Measurements are performed by introducing deformable elastic objets in the films. The shape adopted by those objects once ... [more ▼]

Surface tension profiles in vertical soap films are experimentally investigated. Measurements are performed by introducing deformable elastic objets in the films. The shape adopted by those objects once set in the film is related to the surface tension value at a given vertical position by numerically solving the adapted elasticity equations. We show that the observed dependency of the surface tension versus the vertical position is predicted by simple modeling that takes into account the mechanical equilibrium of the films coupled to previous thickness measurements. © 2015 American Physical Society. ©2015 American Physical Society. [less ▲]

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See detailHow antifoams act: a microgravity study
Yazhgur, Pavel; Langevin, Dominique; Caps, Hervé ULiege et al

in npj Microgravity (2015), 1

Detailed reference viewed: 19 (3 ULiège)
See detailAbstract: A36.00003 : Interaction between electrically charged droplets in microgravity
Brandenbourger, Martin ULiege; Caps, Hervé ULiege; hardouin, jerome et al

Conference (2015)

Detailed reference viewed: 54 (9 ULiège)
See detailSimulation of the convective cooling of a bulk superconductor by a coupling electromagnetic-fluid model
Kirsch, Sébastien; Fagnard, Jean-François ULiege; Dubois, Charles et al

Poster (2014, August)

Detailed reference viewed: 8 (0 ULiège)
See detailCoupled electromagnetic-fluid modelling of a bulk superconductor cooled by a cryogenic fluid
Kirsch, Sébastien; Fagnard, Jean-François ULiege; Dubois, Charles et al

Conference (2014, May 13)

The electric and magnetic performance of a superconductor are strongly dependent of its temperature. For that reason, the cooling of the superconductor material is an important matter, especially for bulk ... [more ▼]

The electric and magnetic performance of a superconductor are strongly dependent of its temperature. For that reason, the cooling of the superconductor material is an important matter, especially for bulk superconductors, which favor low heat transfers because of their low thermal conductivity and the large volume to surface ratio. Usually, heat transfers between a bulk superconductor and the cooling fluid is modelled by a simplified law depending on a convective coefficient and the temperature difference between the fluid and the bulk surface. In practice, however, the heat flux depends also on the geometry of the superconductor and its orientation. Its experimental determination can be difficult and requires considering realistic setups, as effectively used in applications. The goal of this work is to model, in addition to the electromagnetic behaviour of the superconductor, the cooling fluid flow. We focus on the case of a bulk superconductor heated by induced AC losses. The hot surface of the superconductor initiates convective motion in the fluid, which will cool down the superconductor. This coupling effect is modelled using a finite element approach for both the fluid flow and the superconductor. The model is validated experimentally thanks to Particle Image Velocimetry (PIV) methods performs at room temperature with oil. The heat transfers are then estimated and compared with results from the conventional simplified model, in order to understand better its ranges of applicability. [less ▲]

Detailed reference viewed: 10 (4 ULiège)
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See detailResonant and antiresonant bouncing droplets
Hubert, Maxime ULiege; Robert, Damien; Caps, Hervé ULiege et al

Conference (2014)

Detailed reference viewed: 12 (5 ULiège)
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See detailInfluence of the gravity on the discharge of a silo
Dorbolo, Stéphane ULiege; Maquet, Laurent ULiege; Brandenbourger, Martin ULiege et al

in Granular Matter (2013), 15

Detailed reference viewed: 101 (50 ULiège)
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See detailEffect of a capillary meniscus on the Faraday instability threshold
Caps, Hervé ULiege; NGUYN THU LAM, Khanh Dang

in European Physical Journal E -- Soft Matter (2011), 34

Threshold for Faraday instability has been experimentally measured for slightly viscous liquids. Changing the size of the container containing the fluid allows us to emphasize the role played by the ... [more ▼]

Threshold for Faraday instability has been experimentally measured for slightly viscous liquids. Changing the size of the container containing the fluid allows us to emphasize the role played by the capillary meniscus on the onset for instability. As the container is getting smaller, an upset of the critical acceleration is observed. Below a given container diameter, eigen-modes are observed along the stability curve. A dissipation terms is proposed for considering the viscous dissipation against the walls of the container. [less ▲]

Detailed reference viewed: 67 (5 ULiège)
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See detailImpact of liquid droplets on granular media
Delon, Giles ULiege; Terwagne, Denis ULiege; Dorbolo, Stéphane ULiege et al

in Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics (2011)

Detailed reference viewed: 43 (8 ULiège)
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See detailSingle thermal plume in locally heated vertical soap films
Adami, Nicolas ULiege; Dorbolo, Stéphane ULiege; Caps, Hervé ULiege

in Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics (2011), 84

Detailed reference viewed: 81 (38 ULiège)
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See detailFaraday instability on a network
Delon, Giles ULiege; Terwagne, Denis ULiege; Adami, Nicolas ULiege et al

in Chaos (2010)

Detailed reference viewed: 71 (19 ULiège)
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See detailA fountain of droplets
Terwagne, Denis ULiege; Delon, Giles ULiege; Adami, Nicolas ULiege et al

Poster (2010, November 21)

A vessel is plunged upside down into a pool of 50 cSt silicone oil. An air bell is then created. This bell is vertically shaken at 60 Hz that leads to the oscillation of the air/oil interface. The edges ... [more ▼]

A vessel is plunged upside down into a pool of 50 cSt silicone oil. An air bell is then created. This bell is vertically shaken at 60 Hz that leads to the oscillation of the air/oil interface. The edges of the immersed vessel generate surface waves that propagate towards the center of the bell. When the amplitude of the oscillation increases, wave amplitude increases. We study the influence of the angle between successive sides on the wave patterns. Two kinds of vessel have been studied: a triangular and a square prism. The shape of the air/oil meniscus depends on the angle between the sides of the considered prism. As the amplitude of the oscillation is increased, the triple line, which is the contact line between the solid and the air/oil interface, moves up and down. Above a given acceleration that depends on the immersion depth and on the shape vessel, wave goes under the corner edge of the bell. During the oscillation, the wave generates at the edges presents a singularity that leads eventually to a jet and a drop ejection. A drop is ejected at each oscillation. More complicated ejection can be produced with further increase of the amplitude. This is a sample arXiv article illustrating the use of fluid dynamics videos. [less ▲]

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See detailFrozen Splash
Delon, Giles ULiege; Terwagne, Denis ULiege; Adami, Nicolas ULiege et al

Poster (2010, November 21)

We have studied the splashing dynamics of water drops impacting granular layers. Depending on the drop kinetic energy, various shapes are observed for the resulting craters. Experimental parameters that ... [more ▼]

We have studied the splashing dynamics of water drops impacting granular layers. Depending on the drop kinetic energy, various shapes are observed for the resulting craters. Experimental parameters that have been considered are : the size of the millimetric droplets ; the height of the free fall, ranging from 1.5 cm to 100 cm ; and, the diam- eter of the grain. As the drop is impacting the sand layer, energy is dissipated and a splash of sand occurs. Meanwhile, surface tension, in- ertia and viscosity compete, leading to strong deformations of the drop which depend on the experimental conditions. Just after the drop en- ters into contact with the sand, imbibition takes place and increases the apparent viscosity of the fluid. The drop motion is stopped by this phenomenon. Images and fast-video recordings of the impact allowed to find scaling laws for the crater morphology and size. <br />This abstract is related to a fluid dynamics video for the APS DFD gallery of fluid motion 2010. [less ▲]

Detailed reference viewed: 66 (24 ULiège)
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See detailFaraday instability on a network
Delon, Giles ULiege; Terwagne, Denis ULiege; Adami, Nicolas ULiege et al

Poster (2010, March)

Detailed reference viewed: 30 (11 ULiège)