LIQUID-FILM FORMATION ON THE INNER SURFACE OF THE HORIZONTAL CHANNEL

In a horizontal channel a separated how usually occurs if the size of the channel is not as small as a capillary tube and the flow rates of both phases of gas and liquid are low. If the how rate of gas exceeds a certain value, liquid begins to climb up the inner surface of the ch annel. The higher the gas velocity, the higher the film climbs up towa rd the top of the channel cross section. The present paper is concerne d with the experimental investigation of the role of large scale waves , or disturbance waves, in the formation of liquid film on the side wa ll of a horizontal channel. The thinning process of liquid film thickn ess as the function of time is also investigated by a simple liquid fl ow model. (C) 1997 Elsevier Science S.A.