Publications related to Viscosity

Role of visco-elastic rheologies in the persistence of heterogeneous stress distributions in dynamic rupture models.

Jean-François Molinari, Mathilde Edmée Lucette Radiguet de la Bastaie, David Simon Kammer

Understanding how past ruptures will affect the propagation of the following ruptures is fundamental to a better comprehension of earthquake behavior. In that sense, numerical simulations provide a useful tool to study the dynamics of slip. In this study, ...

2013

Investigation of droplet shedding in flow focusing geometries using the boundary element method.

François Gallaire, Mathias Nagel

Shedding of droplets in a flow focusing junction is standard technique in two-phase microfluidics. This break-up is driven by a capillary instability. Here we present a depth-averaged approach to simulate these complex phenomena. Since the physical mechani ...

2013

Shear Thickening Fluid Impregnated Foam Composites for Vibration Control and Impact Protection

Mathieu Soutrenon

Highly concentrated suspensions of silica particles present shear thickening properties, shifting from a low to a high viscosity state, instantly and reversibly at a critical shear rate. Their viscosity increases by up to 3 orders of magnitude, changing fr ...

EPFL2013

Survival of Heterogeneous Stress Distributions Created by Precursory Slip at Frictional Interfaces

Jean-François Molinari, Philippe Gillet, Mathilde Edmée Lucette Radiguet de la Bastaie, David Simon Kammer

We study the dynamics of successive slip events at a frictional interface with finite-element simulations. Because of the viscous properties of the material, the stress concentrations created by the arrest of precursory slip are not erased by the propagati ...

American Physical Society2013

A flow sensing model for mesenchymal stromal cells using morphogen dynamics

Dominique Pioletti, Alexandre Terrier, Miguel Gortchacow

The differentiation of mesenchymal stromal cells has been shown to be af- fected by many parameters such as morphogens, flow rate, medium viscosity, and shear stress when exposed to fluid flow. The mechanism by which these cells sense their environment is ...

Elsevier2013

Measurement of strain-rate components in a glacier with embedded inclinometers: numerical analysis

Marco Picasso, Mariam Jaber, Heinz Blatter

Inclinometry with embedded probes is analyzed with a Stokes model of a solid body floating in a fluid with much smaller viscosity for a two-dimensional flow field. The assumption that such a probe behaves like a Lagrangian unit vector is only justified for ...

International Glaciological Society2013

Approximation of Quantities of Interest in Stochastic PDEs by the Random Discrete $L^2$ Projection on Polynomial Spaces

Fabio Nobile, Giovanni Migliorati, Erik Gustaf Bogislaw Von Schwerin

In this work we consider the random discrete

L^2

projection on polynomial spaces (hereafter RDP) for the approximation of scalar quantities of interest (QOIs) related to the solution of a partial differential equation model with random input parameters. ...

Siam Publications2013

A unified criterion for the centrifugal instabilities of vortices and swirling jets

François Gallaire

Swirling jets and vortices can both be unstable to the centrifugal instability but with a different wavenumber selection: the most unstable perturbations for swirling jets in inviscid fluids have an infinite azimuthal wavenumber, whereas, for vortices, the ...

Cambridge University Press2013

On the longitudinal optimal perturbations to inviscid plane shear flow: formal solution and asymptotic approximation

Cristobal Manuel Arratia Martinez

We study the longitudinal linear optimal perturbations (which maximize the energy gain up to a prescribed time T) to inviscid parallel shear flow, which present unbounded energy growth due to the lift-up mechanism. Using the phase invariance with respect t ...

Cambridge University Press2013

Numerical modeling of the effects of oil on annular laminar film condensation in minichannels

John Richard Thome, Stefano Nebuloni

This paper presents a numerical model to predict laminar film condensation heat transfer in small channels of different internal geometries for miscible refrigerant-oil mixtures. The model includes the contributions of surface tension, axial shear stresses ...

Elsevier2013

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Role of visco-elastic rheologies in the persistence of heterogeneous stress distributions in dynamic rupture models.

Investigation of droplet shedding in flow focusing geometries using the boundary element method.

Shear Thickening Fluid Impregnated Foam Composites for Vibration Control and Impact Protection

Survival of Heterogeneous Stress Distributions Created by Precursory Slip at Frictional Interfaces

A flow sensing model for mesenchymal stromal cells using morphogen dynamics

Measurement of strain-rate components in a glacier with embedded inclinometers: numerical analysis

Approximation of Quantities of Interest in Stochastic PDEs by the Random Discrete $L^2$ Projection on Polynomial Spaces

A unified criterion for the centrifugal instabilities of vortices and swirling jets

On the longitudinal optimal perturbations to inviscid plane shear flow: formal solution and asymptotic approximation

Numerical modeling of the effects of oil on annular laminar film condensation in minichannels

Role of visco-elastic rheologies in the persistence of heterogeneous stress distributions in dynamic rupture models.

Survival of Heterogeneous Stress Distributions Created by Precursory Slip at Frictional Interfaces

Investigation of droplet shedding in flow focusing geometries using the boundary element method.

Shear Thickening Fluid Impregnated Foam Composites for Vibration Control and Impact Protection

Measurement of strain-rate components in a glacier with embedded inclinometers: numerical analysis

Approximation of Quantities of Interest in Stochastic PDEs by the Random Discrete $L^2$ Projection on Polynomial Spaces

A unified criterion for the centrifugal instabilities of vortices and swirling jets

A flow sensing model for mesenchymal stromal cells using morphogen dynamics

Numerical modeling of the effects of oil on annular laminar film condensation in minichannels

On the longitudinal optimal perturbations to inviscid plane shear flow: formal solution and asymptotic approximation