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Philippe Coussot - One of the best experts on this subject based on the ideXlab platform.

  • transition from a simple yield stress fluid to a Thixotropic Material
    THE XV INTERNATIONAL CONGRESS ON RHEOLOGY: The Society of Rheology 80th Annual#N#Meeting, 2008
    Co-Authors: Philippe Coussot, A Ragouilliaux, Guillaume Ovarlez, Benjamin Herzhaft
    Abstract:

    From Magnetic Resonance Velocimetry we determine the local constitutive equation of different model emulsions. We show that a pure emulsion can be turned from a simple yield stress fluid to a Thixotropic Material by adding a small fraction of colloidal particles. The two fluids have the same behavior in the liquid regime but the loaded emulsion exhibits a critical shear rate below which no steady flows can be observed. For a stress below the yield stress, the pure emulsion abruptly stops flowing, whereas the viscosity of the loaded emulsion continuously increases in time, which leads to an apparent flow stoppage. These two Materials illustrate the two kinds of solid‐liquid transitions that can be expected for yield stress fluids.

  • transition from a simple yield stress fluid to a Thixotropic Material
    Physical Review E, 2007
    Co-Authors: A Ragouilliaux, Guillaume Ovarlez, Noushine Shahidzadehbonn, Benjamin Herzhaft, Thierry Palermo, Philippe Coussot
    Abstract:

    From magnetic resonance imaging rheometry we show that a pure emulsion can be turned from a simple yield stress fluid to a Thixotropic Material by adding a small fraction of colloidal particles. The two fluids have the same behavior in the liquid regime but the loaded emulsion exhibits a critical shear rate below which no steady flows can be observed. For a stress below the yield stress, the pure emulsion abruptly stops flowing, whereas the viscosity of the loaded emulsion continuously increases in time, which leads to an apparent flow stoppage. This phenomenon can be very well represented by a model assuming a progressive increase of the number of droplet links via colloidal particles.

A Ragouilliaux - One of the best experts on this subject based on the ideXlab platform.

  • transition from a simple yield stress fluid to a Thixotropic Material
    THE XV INTERNATIONAL CONGRESS ON RHEOLOGY: The Society of Rheology 80th Annual#N#Meeting, 2008
    Co-Authors: Philippe Coussot, A Ragouilliaux, Guillaume Ovarlez, Benjamin Herzhaft
    Abstract:

    From Magnetic Resonance Velocimetry we determine the local constitutive equation of different model emulsions. We show that a pure emulsion can be turned from a simple yield stress fluid to a Thixotropic Material by adding a small fraction of colloidal particles. The two fluids have the same behavior in the liquid regime but the loaded emulsion exhibits a critical shear rate below which no steady flows can be observed. For a stress below the yield stress, the pure emulsion abruptly stops flowing, whereas the viscosity of the loaded emulsion continuously increases in time, which leads to an apparent flow stoppage. These two Materials illustrate the two kinds of solid‐liquid transitions that can be expected for yield stress fluids.

  • transition from a simple yield stress fluid to a Thixotropic Material
    Physical Review E, 2007
    Co-Authors: A Ragouilliaux, Guillaume Ovarlez, Noushine Shahidzadehbonn, Benjamin Herzhaft, Thierry Palermo, Philippe Coussot
    Abstract:

    From magnetic resonance imaging rheometry we show that a pure emulsion can be turned from a simple yield stress fluid to a Thixotropic Material by adding a small fraction of colloidal particles. The two fluids have the same behavior in the liquid regime but the loaded emulsion exhibits a critical shear rate below which no steady flows can be observed. For a stress below the yield stress, the pure emulsion abruptly stops flowing, whereas the viscosity of the loaded emulsion continuously increases in time, which leads to an apparent flow stoppage. This phenomenon can be very well represented by a model assuming a progressive increase of the number of droplet links via colloidal particles.

Benjamin Herzhaft - One of the best experts on this subject based on the ideXlab platform.

  • transition from a simple yield stress fluid to a Thixotropic Material
    THE XV INTERNATIONAL CONGRESS ON RHEOLOGY: The Society of Rheology 80th Annual#N#Meeting, 2008
    Co-Authors: Philippe Coussot, A Ragouilliaux, Guillaume Ovarlez, Benjamin Herzhaft
    Abstract:

    From Magnetic Resonance Velocimetry we determine the local constitutive equation of different model emulsions. We show that a pure emulsion can be turned from a simple yield stress fluid to a Thixotropic Material by adding a small fraction of colloidal particles. The two fluids have the same behavior in the liquid regime but the loaded emulsion exhibits a critical shear rate below which no steady flows can be observed. For a stress below the yield stress, the pure emulsion abruptly stops flowing, whereas the viscosity of the loaded emulsion continuously increases in time, which leads to an apparent flow stoppage. These two Materials illustrate the two kinds of solid‐liquid transitions that can be expected for yield stress fluids.

  • transition from a simple yield stress fluid to a Thixotropic Material
    Physical Review E, 2007
    Co-Authors: A Ragouilliaux, Guillaume Ovarlez, Noushine Shahidzadehbonn, Benjamin Herzhaft, Thierry Palermo, Philippe Coussot
    Abstract:

    From magnetic resonance imaging rheometry we show that a pure emulsion can be turned from a simple yield stress fluid to a Thixotropic Material by adding a small fraction of colloidal particles. The two fluids have the same behavior in the liquid regime but the loaded emulsion exhibits a critical shear rate below which no steady flows can be observed. For a stress below the yield stress, the pure emulsion abruptly stops flowing, whereas the viscosity of the loaded emulsion continuously increases in time, which leads to an apparent flow stoppage. This phenomenon can be very well represented by a model assuming a progressive increase of the number of droplet links via colloidal particles.

Guillaume Ovarlez - One of the best experts on this subject based on the ideXlab platform.

  • transition from a simple yield stress fluid to a Thixotropic Material
    THE XV INTERNATIONAL CONGRESS ON RHEOLOGY: The Society of Rheology 80th Annual#N#Meeting, 2008
    Co-Authors: Philippe Coussot, A Ragouilliaux, Guillaume Ovarlez, Benjamin Herzhaft
    Abstract:

    From Magnetic Resonance Velocimetry we determine the local constitutive equation of different model emulsions. We show that a pure emulsion can be turned from a simple yield stress fluid to a Thixotropic Material by adding a small fraction of colloidal particles. The two fluids have the same behavior in the liquid regime but the loaded emulsion exhibits a critical shear rate below which no steady flows can be observed. For a stress below the yield stress, the pure emulsion abruptly stops flowing, whereas the viscosity of the loaded emulsion continuously increases in time, which leads to an apparent flow stoppage. These two Materials illustrate the two kinds of solid‐liquid transitions that can be expected for yield stress fluids.

  • transition from a simple yield stress fluid to a Thixotropic Material
    Physical Review E, 2007
    Co-Authors: A Ragouilliaux, Guillaume Ovarlez, Noushine Shahidzadehbonn, Benjamin Herzhaft, Thierry Palermo, Philippe Coussot
    Abstract:

    From magnetic resonance imaging rheometry we show that a pure emulsion can be turned from a simple yield stress fluid to a Thixotropic Material by adding a small fraction of colloidal particles. The two fluids have the same behavior in the liquid regime but the loaded emulsion exhibits a critical shear rate below which no steady flows can be observed. For a stress below the yield stress, the pure emulsion abruptly stops flowing, whereas the viscosity of the loaded emulsion continuously increases in time, which leads to an apparent flow stoppage. This phenomenon can be very well represented by a model assuming a progressive increase of the number of droplet links via colloidal particles.

Noushine Shahidzadehbonn - One of the best experts on this subject based on the ideXlab platform.

  • transition from a simple yield stress fluid to a Thixotropic Material
    Physical Review E, 2007
    Co-Authors: A Ragouilliaux, Guillaume Ovarlez, Noushine Shahidzadehbonn, Benjamin Herzhaft, Thierry Palermo, Philippe Coussot
    Abstract:

    From magnetic resonance imaging rheometry we show that a pure emulsion can be turned from a simple yield stress fluid to a Thixotropic Material by adding a small fraction of colloidal particles. The two fluids have the same behavior in the liquid regime but the loaded emulsion exhibits a critical shear rate below which no steady flows can be observed. For a stress below the yield stress, the pure emulsion abruptly stops flowing, whereas the viscosity of the loaded emulsion continuously increases in time, which leads to an apparent flow stoppage. This phenomenon can be very well represented by a model assuming a progressive increase of the number of droplet links via colloidal particles.