Mass transfer in wavy liquid films

Theoretical analysis of mass transfer into wavy liquid films shows that the amplification in mass transfer due to the presence of the waves is a function of wave parameters, namely wave length, wave velocity, and wave amplitude and hydrodynamic conditions in the films. When the diffusing species do not penetrate deep into the film an expression is derived which shows that the increase in the mass transfer coefficient is a function of a single dimensionless group, Eν^{$\text{1}\text{2}$}, which, without the help of any adjustable parameter, can be found from the wave and flow parameters of the film. Comof this theory with some experimental data shows good qualitative agreement.