INSTABILITY OF A LIQUID-FILM MOVING TOGETHER WITH A TURBULENT GAS-FLOW

Linear stability of a liquid film moving on the surface of an oblique plate under the action of gravity and a turbulent gas stream was studi ed using an integral method and the Orr-Sommerfeld equation. The effec t of the gas stream on the film motion is described by tangential and normal stresses acting on the free surface. The stress fluctuations ar e determined using a quasilaminar model. Both cocurrent and countercur rent phase motions at an arbitrary substrate orientation are considere d.