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Mass transport properties of the tetrahydronaphthalene/n-dodecane mixture measured by investigating non-equilibrium fluctuations

Croccolo, Fabrizio ; Scheffold, Frank ; Bataller, Henri

In: Comptes Rendus Mécanique, 2013, vol. 341, no. 4–5, p. 378–385

We present preliminary near-field light scattering (NFS) data concerning the analysis of the static power spectrum and of the relaxation time constant as a function of the wave vector for non-equilibrium fluctuations (NEFs). The goal of these measurements is to obtain information about the Soret and the mass diffusion coefficients of a binary mixture undergoing thermodiffusion. In particular, we...

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

Giraudet, Cédric ; Croccolo, Fabrizio ; Galliero, Guillaume ; Pijaudier-Cabot, Gilles ; Vaerenbergh, Stefan Van ; Saghir, M. Ziad ; Montel, François ; Bataller, Henri

In: Comptes Rendus Mécanique, 2013, vol. 341, no. 4-5, p. 340-347

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...

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