Liquid film evaporation inside an inclined channel: Effect of the presence of a porous layer

In this paper, we numerically investigate the improvement of the heat and mass transfer during the evaporation of a liquid film by introducing a liquid saturated porous layer inside an inclined channel. To achieve this, we solved the non linear partial differential equations that describe the physical system using the finite volume method in both phases (liquid saturated porous layer and gas). Compared to the liquid case, the use of the porous layer promotes the heat and mass transfer. This improvement is greater when we increase the air inlet velocity and we decrease the porosity and the thickness of the porous medium. We also propose correlations that allows us to relate the Nusselt and Sherwood numbers to the Reynolds and Biot numbers. (C) 2016 Elsevier Masson SAS. All rights reserved.