The behavior of pressurized gas injected into liquid between horizontal disks residual liquid film on disks after passage of gas front

The behavior of a bubble of gas suddenly injected from a nozzle into a liquid between horizontal circular disks is studied experimentally and analytically. A thin liquid film remains as a residue on the upper disk after the passage of the interface. The Morton number affects the residual liquid film thickness. At high gas flow rates, the residual liquid film thickness is almost constant. At low gas flow rates, it is dominated by the surface tension and the viscosity of the liquid. (author)