Publications related to Measurement and modelling of dynamic fluid saturation in carbon reinforcements

Dam Break of Newtonian Fluids and Granular Suspensions

The objective of this thesis was to increase our understanding of two-phase geophysical flows (e.g. debris flows) by providing velocity profiles in idealized laboratory avalanches. To that end, we developed a new experimental platform made up of an incline ...

EPFL2012

Characterization of the Flow Generated in an Annular Test Facility

Peter Ott, Dominique Charbonnier, Elia Colombo, Cécile Deslot

Annular cascades are particularly useful to study the three dimensional phenomena encountered in turbomachines. The Non-Rotating Annular Test Facility of the Swiss Federal Institute of Technology in Lausanne (EPFL) consists in a radial-axial inlet nozzle a ...

2011

Interaction Between Nanosecond Pulse DBD Actuators and Transonic Flow

Christoph Hollenstein, Peter Ott, Pénélope Leyland, Philip Peschke, Sami Goekce

The application of nanosecond pulse-driven surface dielectric barrier discharge (DBD) actuators as control devices on airfoils and turbomachinery blades in transonic flow is investigated experimentally. Images acquired with a short-exposure ICCD camera doc ...

2011

Characterization and prediction of two-phase flow regimes in miniature tubes

John Richard Thome, Rémi Revellin

Visual observations of two-phase regimes for R134a and R245fa flowing in 0.509 mm and 0.790 mm horizontal tubes are documented and compared to the predictions of the analytical flow regime models available in the literature. Annular flow was found to domin ...

Elsevier2011

Multiscale Computational Methodology Applied to Hydroacoustic Resonance in Cavitating Pipe Flow

Nicolas Ruchonnet

The present work is a contribution to the physical analysis and numerical simulation of the pressure surges in hydraulic machinery and connected conduit systems. Localized hydrodynamic instabilities including cavitation are prone to interact with the entir ...

EPFL2010

Low-dose, simple, and fast grating-based X-ray phase-contrast imaging

Marco Stampanoni, Ziyu Wu

Phase sensitive X-ray imaging methods can provide substantially increased contrast over conventional absorption-based imaging and therefore new and otherwise inaccessible information. The use of gratings as optical elements in hard X-ray phase imaging over ...

National Academy of Sciences2010

Rheophysics of concentrated particle suspensions in a Couette cell using a refractive index matching technique

Sébastien Wiederseiner

The main objective of this work is to gain insight into the rheometry and rheology of concentrated non-colloidal particle suspensions. Among the many questions that have as yet received little answers, we are especially interested in the rheometric problem ...

EPFL2010

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

Evolution of unsaturated hydraulic conductivity of aggregated soils due to compressive forces

Dani Or

Prediction of water flow and transport processes in soils susceptible to structural alteration such as compaction of tilled agricultural lands or newly constructed landfills rely on accurate description of changes in soil unsaturated hydraulic conductivity ...

2008

Liquid–liquid two-phaseflow patterns andmasstransfer characteristics inrectangular glassmicroreactors

Albert Renken, Lioubov Kiwi, Anne-Laure Dessimoz

The flow of two immiscible fluids was investigated in rectangular glass microchannels with equivalent diameters of 269 and 400

\mu m

. Deionised water, dyed toluene and hexane were selected as probe fluids. Flow patterns were obtained for Y- and T-junction ...

2008

Measurement and modelling of dynamic fluid saturation in carbon reinforcements

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Dam Break of Newtonian Fluids and Granular Suspensions

Characterization of the Flow Generated in an Annular Test Facility

Interaction Between Nanosecond Pulse DBD Actuators and Transonic Flow

Characterization and prediction of two-phase flow regimes in miniature tubes

Multiscale Computational Methodology Applied to Hydroacoustic Resonance in Cavitating Pipe Flow

Low-dose, simple, and fast grating-based X-ray phase-contrast imaging

Rheophysics of concentrated particle suspensions in a Couette cell using a refractive index matching technique

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

Evolution of unsaturated hydraulic conductivity of aggregated soils due to compressive forces

Liquid–liquid two-phaseflow patterns andmasstransfer characteristics inrectangular glassmicroreactors

Characterization and prediction of two-phase flow regimes in miniature tubes

Liquid–liquid two-phaseflow patterns andmasstransfer characteristics inrectangular glassmicroreactors

Evolution of unsaturated hydraulic conductivity of aggregated soils due to compressive forces

Characterization of the Flow Generated in an Annular Test Facility

Multiscale Computational Methodology Applied to Hydroacoustic Resonance in Cavitating Pipe Flow

Interaction Between Nanosecond Pulse DBD Actuators and Transonic Flow

Low-dose, simple, and fast grating-based X-ray phase-contrast imaging

Rheophysics of concentrated particle suspensions in a Couette cell using a refractive index matching technique

Dam Break of Newtonian Fluids and Granular Suspensions

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