Concept

Viscosité

Publications associées (660)

A Dynamic-induced Direct-shear Model for Dynamic Triggering of Frictional Slip on Simulated Granular Gouges

This study presents a dynamic-induced direct-shear model to investigate the dynamic triggering of frictional slip on simulated granular gouges. An incident P-wave is generated as a shear load and a normal stress is constantly applied on the gouge layer. Th ...

Springer Verlag2014

Coherent structures in open channel flows with bed load transport over an hydraulically rough bed

Mário Jorge Rodrigues Pereira Da Franca

Excess sediment production in the upper parts of catchments may result in important impacts over morphodynamics of gravel bed-rivers. By changing morphodynamics, sediment overfeeding may induce important changes in the structure of near-bed flow, mainly in ...

CRC Press/Balkema2014

Shapes of a Suspended Curly Hair

Pedro Miguel Nunes Pereira de Almeida Reis

We investigate how natural curvature affects the configuration of a thin elastic rod suspended under its own weight, as when a single strand of hair hangs under gravity. We combine precision desktop experiments, numerics, and theoretical analysis to explor ...

American Physical Society2014

Finite ballooning angle effects on ion temperature gradient driven mode in gyrokinetic flux tube simulations

Stephan Brunner

This paper presents effects of finite ballooning angles on linear ion temperature gradient (ITG) driven mode and associated heat and momentum flux in Gyrokinetic flux tube simulation GENE. It is found that zero ballooning angle is not always the one at whi ...

Amer Inst Physics2014

Head losses in junction manholes for free surface flows in circular conduits

Michael Pfister, Corrado Gisonni

Former studies on combining flows resulted in an efficient layout of sewer junctions operated under supercritical approach flow conditions. Straight extensions allowed a reduction in the shock wave heights generated by the merging flows, so that the global ...

Asce-Amer Soc Civil Engineers2014

Speed Profile Optimization for Vehicles Crossing an Intersection Under a Safety Constraint

Denis Gillet

This paper considers the case of two vehicles crossing an intersection from perpendicular directions. A second-order kinematic model is assumed as well as that initially both vehicles move with their maximum permissible speed. A braking/reaccelerating spee ...

Ieee2014

A micropillar array for sample concentration via in-plane evaporation

Demetri Psaltis, Jae-Woo Choi, Seyyed Mohammad Hosseini Hashemi

We present a method to perform sample concentration within a lab-on-a-chip using a microfluidic structure which controls the liquid-gas interface through a micropillar array fabricated in polydimethylsiloxane between microfluidic channels. The microstructu ...

American Institute of Physics2014

The interplay between apparent viscosity and wettability in nanoconfined water

Kislon Voitchovsky

Understanding and manipulating fluids at the nanoscale is a matter of growing scientific and technological interest. Here we show that the viscous shear forces in nanoconfined water can be orders of magnitudes larger than in bulk water if the confining sur ...

Nature Publishing Group2013

Translational and Rotational Diffusion in Water in the Gigapascal Range

Livia Eleonora Bove Kado

First measurements of the self-dynamics of liquid water in the GPa range are reported. The GPa range has here become accessible through a new setup for the Paris-Edinburgh press specially conceived for quasielastic neutron scattering studies. A direct meas ...

American Physical Society2013

A new prediction of wavelength selection in radial viscous fingering involving normal and tangential stresses

François Gallaire, Mathias Nagel

We reconsider the radial Saffman-Taylor instability when a fluid injected from a point source displaces another fluid of higher viscosity in a Hele-Shaw cell where the fluids are confined between two neighboring flat plates. The advancing fluid front is un ...

2013

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