Thermogravitational separation in porous vertical and horizontal cylindrical annular cells saturated by a binary mixture - Université Toulouse III - Paul Sabatier - Toulouse INP Accéder directement au contenu
Article Dans Une Revue European Physical Journal E: Soft matter and biological physics Année : 2022

Thermogravitational separation in porous vertical and horizontal cylindrical annular cells saturated by a binary mixture

Résumé

In this paper, analytical and numerical studies of species separation in vertical and horizontal porous, cylindrical annular cells were presented. The binary fluid, saturating the porous medium, is a water-ethanol mixture. The thickness e, of the horizontal and vertical columns is equal to R o − R i , where R i and R o are respectively the internal and the external radii. H is the height of the vertical cell, and the length of the horizontal cell. Constant temperatures, T hot and T cold , were imposed on the inner and outer cylinders. Since an important species separation, in thermo-gravitational column (TGC), is obtained for e << H, the same assumption was made for the two configurations. The analytical solution was obtained using the parallel flow approximation for both configurations. The governing equations were solved numerically for 2D and 3D configurations using two different softwares (Comsol Multiphysics and a spectral collocation method with Gauss-Lobatto-Chebyshev points). Velocity, temperature, mass fraction fields and time to reach steady state were compared for the two configurations. The amount of species separated at the top or the bottom of each cell was also compared for each configuration.
Fichier principal
Vignette du fichier
EPJ Mojtabi_version_AAM.pdf (666.74 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04125183 , version 1 (12-06-2023)

Identifiants

Citer

Khairi Sioud, Ali Abdennadher, Alain Bergeon, Slim Kaddeche, Marie Catherine Charrier Mojtabi, et al.. Thermogravitational separation in porous vertical and horizontal cylindrical annular cells saturated by a binary mixture. European Physical Journal E: Soft matter and biological physics, 2022, 45 (5), pp.45. ⟨10.1140/epje/s10189-022-00204-3⟩. ⟨hal-04125183⟩
29 Consultations
6 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More