Macroscopic description of droplet–film interaction for gas–liquid systems

The modeling of droplet–film interaction has a rather high industrial significance. The droplet size distribution and the liquid film are strongly dependent on entrainment and deposition phenomena. This work discusses a macroscopic modeling of film–droplet interaction phenomena based on a statistical approach resembling the population balance equation. The modeling framework is solved by using a least squares spectral method which allows a detailed description of the evolution of the droplet size distribution. Numerical experiments are presented in order to show the principles of the modeling framework.