MEASUREMENTS OF NEAR-WALL LIQUID FILM LOCAL PARAMETERS IN THERMO-PHYSICAL EXPERIMENTS
The method for measuring thickness and velocity of a near-wall liquid film flowing together with high-velocity (hundreds of meters per second) co-current gas flow from axially symmetric channels into vacuum is presented in the paper. It is shown that co-current gas flow has a strong impact on the near-wall film, leading to intense wave formation, as well as detachment of droplets from the film surface.