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Thermodiffusion of the tetrahydronaphthalene and dodecane mixture under high pressure and in porous medium

  • Giraudet, Cédric Laboratoire des Fluides Complexes et leurs Réservoirs, UMR 5150, Université de Pau et des Pays de lʼAdour, France
  • Croccolo, Fabrizio Physics Department, University of Fribourg, Switzerland
  • Galliero, Guillaume Laboratoire des Fluides Complexes et leurs Réservoirs, UMR 5150, Université de Pau et des Pays de lʼAdour, France
  • Pijaudier-Cabot, Gilles Laboratoire des Fluides Complexes et leurs Réservoirs, UMR 5150, Université de Pau et des Pays de lʼAdour, France
  • Vaerenbergh, Stefan Van Microgravity Research Center, Université Libre de Bruxelles, Belgium
  • Saghir, M. Ziad Ryerson University, 350 Victoria St, Toronto, Canada
  • Montel, François Total SA, avenue Larribau, Pau, France
  • Bataller, Henri Laboratoire des Fluides Complexes et leurs Réservoirs, UMR 5150, Université de Pau et des Pays de lʼAdour, France
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    20.02.2013
Published in:
  • Comptes Rendus Mécanique. - 2013, vol. 341, no. 4-5, p. 340-347
Thermodiffusion cell
Porous medium
Tortuosity
Molecular diffusion coefficient
Soret coefficient
High pressure
English A thermodiffusion cell is used in order to perform Soret experiments on binary mixtures at high pressure and in the presence of a porous medium. The cell is validated at atmospheric pressure with toluene/hexane and the tetrahydronaphthalene/dodecane mixtures. The mass separation follows a diffusive behaviour when the cell is filled with a porous medium. At least three times the relaxation time is needed to have a good estimation of the Soret coefficients. From the transient state of the mass separation and using accepted values of the diffusion coefficient, the tortuosity of the porous medium was evaluated, too. Finally, experiments at high pressure were performed with the tetrahydronaphthalene/dodecane system. In these experiments, decreases of the Soret coefficient and of the tortuosity of the porous medium were measured as a function of the pressure.
Faculty
Faculté des sciences et de médecine
Department
Département de Physique
Language
  • English
Classification
Physics
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/302962
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