ONSET OF SLUGGING IN HORIZONTAL DUCTS

The prediction afforded by Gardner's (1977) hypothesis for the onset of slugging is shown to form an upper bound to the data of Kordyban (1977) for both the required phase velocity difference and the wave height for conditions just subcritical to those needed for slugging. Experimental data is only available for air/water flow at atmospheric pressure in ducts of rectangular cross-section. Predictions are presented for fluids with other density ratios in similar ducts and in horizontal tubes. © 1979.