Browsing by Autor "Bruno Mendiboure"

Filter results by typing the first few letters
Now showing 1 - 2 of 2
  • Thumbnail Image
    Item type: Item ,
    Contribution to the modelization of the emulsification in a colloid mill
    (2007) Christophe Dicharry; Bruno Mendiboure; G. Marion; J. Lachaise; Jean‐Louis Salager
    We propose a stochastic model to forecast the droplet size distributions of oil in water emulsions generated in a colloid mill. The model lays on breakup sequences of the oil droplets induced by the shear field existing within the mill. One single set of the three fitting parameters is sufficient to account for the variations of the droplet size distributions in function of the surfactant concentration, the surfacant nature, the rotation speed of the rotor.
  • Thumbnail Image
    Item type: Item ,
    Improved determination of the initial structure of liquid foams
    (2007) J. Lachaise; Smail Sahnoun; Christophe Dicharry; Bruno Mendiboure; Jean‐Louis Salager
    Liquid foams are obtained by independently fixing foaming solution and gas flows through a coarse porous structure. Precise measurements of these flows immediately give the gas-volume fractions of the foams; real-time diffractometry gives their initial bubble-size distributions and these are found to be lognormal. — The proposed methods provide reproducible foams and are sensitive. They will be useful to test the interbubble gas transfer theory and to grade surfactants according to their ability to form persistent foams.