Turbulent conjugate heat and mass transfer from the surface of a binary mixture of ethanol/iso-octane in a countercurrent stratified two-phase flow system

A numerical study has been performed to determine evaporation rate from the surface of ethanol/iso-octane in an inclined 2D channel. The liquid and gas phases are flowing in counter-current direction. VOF multiphase model has been used to model stratified two-phase flow. Vapour/liquid equilibrium pressure has been calculated using UNIFAC model. Mass transfer contributions from each component evaporating into the carrier gas are calculated and source terms are accordingly implemented in continuity, momentum, energy and species equations. A parametric study with different inlet and exit conditions has been performed.