In the air conditioning equipment and Chemical equipment,the heat and mass transfer at the interface of the thin water film and the air,is a complex process coupled with momentum. The study of its mechanics will contribute to improving the equipment's thermal performance.In this paper,a simple mathematical model of the shape of the water film is established,and is used to analyze the air system.The results indicate that there is a comformability to the experimental data. The study presented here has certain re...