TY - JOUR
TI - Numerical study of heat and mass transfer during evaporation of a turbulent binary liquid film
AU - Khalal Larbi
AU - Feddaoui M'barek
AU - Mediouni Touria
JN - Thermal Science
PY - 2015
VL - 19
IS - 5
SP - 1529
EP - 1540
PT - Article
AB - This paper deals with a computational study for analysing heat and mass  exchanges in the evaporation of a turbulent binary liquid film (water-ethanol  and water-methanol) along a vertical tube. The film is in co-current with the  dry air and the tube wall is subjected to a uniform heat flux. The effect of  gas-liquid phase coupling, variable thermophysical properties and film  vaporization are considered in the analysis. The numerical method applied  solves the coupled governing equations together with the boundary and  interfacial conditions. The algebraic systems of equations obtained are  solved using the Thomas algorithm. The results concern the effects of the  inlet liquid Reynolds number and inlet film composition on the intensity of  heat and mass transfer. In this study, results obtained show that heat  transferred through the latent mode is more pronounced when the concentration  of volatile components is higher in the liquid mixture .The comparisons of  wall temperature and accumulated mass evaporation rate with the literature  results are in good agreement.