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Noise-induced transitions past the onset of a steady symmetry-breaking bifurcation: The case of the sudden expansion

Publications associées (68)

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We use numerical simulations to study the effect of particle friction on suspension flows of non-Brownian hard particles. By systematically varying the microscopic friction coefficient mu(p) and the viscous number J, we build a phase diagram that identifie ...

Amer Physical Soc2017

Bacterial biofilm under flow: First a physical struggle to stay, then a matter of breathing

Anne-Florence Raphaëlle Bitbol, Josué Sznitman

Bacterial communities attached to surfaces under fluid flow represent a widespread lifestyle of the microbial world. Through shear stress generation and molecular transport regulation, hydrodynamics conveys effects that are very different by nature but str ...

2017

Multiscale model reduction methods for flow in heterogeneous porous media

Assyr Abdulle, Ondrej Budác

In this paper we provide a general framework for model reduction methods applied to fluid flow in porous media. Using reduced basis and numerical homogenization techniques we show that the complexity of the numerical approximation of Stokes flow in heterog ...

Springer2016

MATHICSE Technical Report : Multiscale model reduction methods for flow in heterogeneous porous media

Assyr Abdulle, Ondrej Budác

MATHICSE2016

Turbulent - laminar transition in the propagation of height-contained hydraulic fracture

Brice Tanguy Alphonse Lecampion, Haseeb Zia

Fluid flow is usually assumed to be laminar in the modelling of hydraulic fracture propagation. This approximation can however break down in certain cases where a low viscosity fluid (e.g. water) is injected at a high rate resulting in Reynolds numbers wel ...

2016

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Gravity-driven flows can erode the bed along which they descend and increase their mass by a factor of 10 or more. This process is called basal entrainment. Although documented by field observations and laboratory experiments, it remains poorly understood. ...

2016

Basal entrainment by Newtonian gravity-driven flows

Christophe Ancey, Nicolas Andreini, Belinda Margaret Bates

Gravity-driven flows can erode the bed along which they descend and increase their mass by a factor of 10 or more. This process is called "basal entrainment." Although documented by field observations and laboratory experiments, it remains poorly understoo ...

Amer Inst Physics2016

A numerical study of the blood flow through the aortic valve: comparison of Newtonian and non-Newtonian models

Nicholas Alan Molyneaux

Being able to accurately reproduce the physiological phenomena which take place in blood vessels requires understanding the impact physical parameters have on the fluid’s flow. Modeling blood flow implies choosing, or defining, at least one model with the ...

2016

We present a new conservative multiscale method for Stokes flow in heterogeneous porous media. The method couples a discontinuous Galerkin finite element method(DG-FEM) at the macroscopic scale for the solution of an effective Darcy equation with a Stokes ...

MATHICSE2015

ALE/finite element modeling of an unconfined bubble plume in periodic domain: bubble shape and oscillation analysis

John Richard Thome, Gustavo Rabello Dos Anjos, Gustavo Charles Peixoto de Oliveira

This paper introduces a numerical model developed based upon the arbitrary Lagrangian-Eulerian/finite element scheme to analyze bubble plumes in a periodic domain. A spherical air bubble is immersed into a large pool of quiescent water to act as an unconfi ...

Springer Heidelberg2015