Concept

Viscosité

Publications associées (660)

The dam-break problem for viscous fluids in the high-capillary-number limit

Christophe Ancey, Steve Cochard, Nicolas Andreini

Experiments were undertaken to investigate dam-break flows where a finite volume of highly viscous fluid (glucose with viscosity μ ≈ 350 Pa s) maintained behind a lock gate was released into a horizontal or inclined flume. The resulting sequence of flow-de ...

Cambridge University Press2009

Experimental investigation of the spreading of viscoplastic fluids on inclined planes

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 a plane. We used Carbo ...

Elsevier2009

High-statistics study of ηπ0 production in two-photon collisions

Olivier Schneider, Chao Wang, Remi Léandre Albert Louvot, Ji Hyun Kim, Jing Li

The differential cross section for the process γγ→η π0 has been measured in the kinematic range 0.84GeV

2009

Unified macro-to-microscale method to predict two-phase frictional pressure drops of annular flows

John Richard Thome, Andrea Cioncolini

The study considers the prediction of pressure gradients in adiabatic gas-liquid annular two-phase flow in the macro-to-microscale range Twenty-four empirical correlations have been tested against an experimental data bank drawn together in this study cont ...

Elsevier2009

Lattice Boltzmann method for the simulation of viscoelastic fluid flows

Orestis Pileas Malaspinas

The simulation of flows of viscoelastic fluids is a very challenging domain from the theoretical as well as the numerical modelling point of view. In particular, all the existing methods have failed to solve the high Weissenberg number problem (HWNP). It i ...

EPFL2009

The dam-break problem for Herschel-Bulkley viscoplastic fluids down steep flumes

Christophe Ancey, Steve Cochard

In this paper we investigate the dam-break problem for viscoplastic (Herschel- Bulkley) fluids down a sloping flume: a fixed volume of fluid initially contained in a reservoir is released onto a slope and flows driven by gravitational forces until these fo ...

2009

Geometric Alignments of the Subgrid-Scale Force in the Atmospheric Boundary Layer

Marc Parlange, Charles Vivant Ignacio Meneveau, Chad Higgins

priori tests of subgrid-scale (SGS) models for large-eddy simulations (LES). The experimental arrangements and data collected have facilitated studies of variables such as the filtered strain rate, SGS stress and dissipation, and the eddy viscosity coeffic ...

2009

Predicting the constitutive behavior of semi-solids via a direct finite element simulation: application to AA5182

André Phillion

The methodology of direct finite element (FE) simulation was used to predict the semi-solid constitutive behavior of an industrially important aluminum-magnesium alloy, AA5182. Model microstructures were generated that detail key features of the as-cast se ...

Institute of Physics2009

Solvent-Free Ionic Liquid Electrolytes for Mesoscopic Dye-Sensitized Solar Cells

Shaik Mohammed Zakeeruddin

Ionic liquids have been identified as a new class of solvent that offers opportunities to move away from the traditional solvents. The physical-chemical properties of ionic liquids can be tuned and controlled by tailoring their structures. The typical prop ...

2009

Part load flow in radial centrifugal pumps

Olivier Braun

Centrifugal pumps are required to sustain a stable operation of the system they support under all operating conditions. Minor modifications of the surfaces defining the pump's water passage can influence the tendency to unstable system operation significan ...

EPFL2009

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