NUMERICAL INVESTIGATION OF THE WAVE FLOWS OF LIQUID FILMS INTERACTING WITH A GAS FLOW

The nonlinear partial diff erential equation, defi ning the state of the free surface of a viscous liquid layer (fi lm) interacting with a backward gas fl ow, is presented. The evolution of the periodic disturbances of this fi lm, resulting in the establishment of a regular regime of its fl ow, was numerically investigated. For a water fi lm falling vertically down under the conditions of its interaction with a reverse gas fl ow, the shapes of the waves on the gas–liquid contact surface were constructed and the wave characteristics of a regular regime of fl ow of the water fi lm (the frequency of the waves and their increment and phase velocity) and the time of establishment of this regime were calculated
   
Author:  L. A. Prokudinaa and E. A. Salamatov
Keywords:  liquid fi lm, shear stress, nonlinear waves
Page:  123