NUMERICAL-SIMULATION OF FACILITATED TRANSPORT OF CARBON-DIOXIDE IN A CONDENSATE FILM

Numerical analysis was performed for the effects of chemical reactions on the behavior of carbon dioxide absorbed in a condensate film. A co ndensate film flowing on a vertical surface under the influence of the combined effects of the vapor shear and gravity was chosen as a model problem. Convective flux towards the wall surface played a significan t role in the absorption characteristics. Concentrations of the carbon dioxide and bicarbonate ion in the film increased as the condensation proceeded. The difference between the two concentrations at a same lo ngitudinal position decreased as the condensation proceeded. Resistivi ty of the condensate film was smaller for a thicker condensate film wi th larger concentration of carbon dioxide in the vapor phase.