SIMULATION OF CONVECTIVE MASS TRANSFER IN A NEAR-CRITICAL BINARY MIXTURE ABOVE AN ADSORBENT BOUNDARY

Smahi Housseyne (1) , Djilali Ameur (1) , Joanna Dib (1) , Isabelle Raspo (2)

1 Laboratoire de Physique Théorique, Faculté des Sciences, Département de Physique, Université Abou Bekr Belkaid de Tlemcen, Algérie
2 M2P2 - Laboratoire de Mécanique, Modélisation et Procédés Propres

In this work, we present a study of the adsorption for dilute solute (Naphthalene) in supercritical CO2 enclosed in a rectangular cavity. The effect of proximity to the critical point on mass transfer is numerically investigated. The numerical model is based on the resolution of the Navier-Stokes equations coupled with the energy and mass diffusion balances. The velocity field, the mass fraction perturbation as well as the temporal evolution of the mean Sherwood number is presented for various temperatures. The results show that close to the mixture critical point, the homogeneous adsorption of the solute is obtained. Additional key findings include that closer we get to the critical point, the better is the mass transfer on the adsorbent plate.

Keywords: Mass transfer; Adsorption; Supercritical carbon dioxide (scCO2); mixture fluid; Piston effect

Domains: Engineering Sciences [physics]; Chemical and Process Engineering

Smahi Housseyne, Djilali Ameur, Joanna Dib, Isabelle Raspo. SIMULATION OF CONVECTIVE MASS TRANSFER IN A NEAR-CRITICAL BINARY MIXTURE ABOVE AN ADSORBENT BOUNDARY. 4th Conference on Energy, Materials, Applied Energetics and Pollution (ICEMAEP2018), Apr 2018, Constantine, Algeria. ⟨hal-02117710⟩