Condensation Growth of Drops in a Quiescent Gas-Liquid Mixture

Condensation Growth of Drops in a Quiescent Gas-Liquid Mixture 

Consider a gas mixture consisting of two components with mole fractions yio and y2o at pressure pi and temperature Ti. At some point in time, taken to be the initial time, the pressure and temperature change abmptly and become equal to p2 and T2, which then remain constant. Thus, the thermodynamic balance that existed in the system at pi and Ti will be disturbed, and at the new values p2 and T2 drops of liquid phase with average radius Rq = Rn will appear in the mixture due to homogeneous condensation. These drops grow in time until a new equilibrium appropriate to the values pz and Tz is established. 

Assume that the drops formed consist only of component 1 and that during condensation growth of the drop only component 1 is condensed at the drop sur- 

The flux of the i-th component in the gas phase may be expressed in terms of mole fractions of components yi in the following manner  

Substitution of Eq. (16.3) into Eq. (16.1) gives equations describing the temporal change of the concentration of a component in the gas  

---