Concept

Vecteur vitesse

Publications associées (354)

The influence of shear layer thickness on the stability of confined two-dimensional wakes

The influence of confinement onto the inviscid and incompressible linear stability of the family of wakes introduced by Monkewitz [Phys. Fluids 31, 999 (1988)] is examined. The nondimensional parameters of the model, the velocity ratio Λ, defined as ratio ...

2011

Dam breaks of viscoplastic material on an inclined plane.

Christophe Ancey, Steve Cochard

We report experimental results related to the dam-break problem for viscoplastic fluids. Using image processing techniques, we were able to accurately reconstruct the free-surface evolution of fixed volumes of fluid suddenly released on an inclined plane. ...

Engineers Australia, July2011

IsoGeometric Analysis: stable elements for the 2D Stokes equation

Annalisa Buffa

In this paper, we discuss the application of IsoGeometric Analysis to incompressible viscous flow problems. We consider, as a prototype problem, the Stokes system and we propose various choices of compatible spline spaces for the approximations to the velo ...

2011

Experimental study of velocity fields in rectangular shallow reservoirs

Anton Schleiss, Erica Camnasio

Velocity fields in rectangular shallow reservoirs with different length-to-width and expansion ratios were investigated in an experimental study, to evaluate the effect of geometry on the flow field. A wide range of combinations of these two non-dimensiona ...

2011

Fluid Structure Interaction Simulations of Physiological Blood Flow in the Aorta

Alfio Quarteroni, Nikolaos Stergiopoulos, Simone Deparis, Philippe Reymond, Paolo Crosetto, Dimitrios Kontaxakis

The numerical tools to simulate blood flow in the cardiovascular system are constantly developing due to the great clinical interest and to scientific advances in mathematical models and computational power. The present work aims to address and validate ne ...

Elsevier2011

Ambulatory measurement of ankle kinetics for clinical applications

Kamiar Aminian, Julien Favre, Xavier Crevoisier, Hossein Rouhani

This study aimed to design and validate the measurement of ankle kinetics (force, moment, and power) during consecutive gait cycles and in the field using an ambulatory system. An ambulatory system consisting of plantar pressure insole and inertial sensors ...

2011

Multiaxial yield behaviour of Al replicated foam

Andreas Mortensen, Raphaël Charvet, Etienne Combaz, Willy Dufour, Claudio Bacciarini

Multiaxial experiments are performed on replicated aluminium foam using a custom-built apparatus. The foam structure is isotropic, and features open monomodal pores 75 mu m in average diameter. Plane stress (sigma(1), sigma(2), sigma(3) = 0) and axisymmetr ...

Elsevier2011

On the locality of MHD turbulence scale fluxes

The scale locality of energy fluxes for magnetohydrodynamics (MHD) is investigated numerically for stationary states of turbulence. Two types of forces are used to drive turbulence, a kinetic force that acts only on the velocity field and a kinetic-inducti ...

American Institute of Physics2011

Response of an Embedded Block Impacted by High-Velocity Jets

Matteo Paolo Elia Antonio Federspiel

High-velocity plunging jets, issuing from ood release structures of dams, may result in scouring of the rocky riverbed and even endanger the foundation of the dams. Assessment of the scour extent is essential to ensure the safety of the dam and appurtenant ...

EPFL2011

Current-induced domain wall motion in nanoscale ferromagnetic elements

The manipulation of a magnetic domain wall (DW) by a spin polarized current in ferromagnetic nanowires has attracted tremendous interest during the last years due to fundamental questions in the fields of spin dependent transport phenomena and magnetizatio ...

2011

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