Characterizing the Onset of Gas Entrainment in a Single Discharging Bottom Branch Through Flow Visualization Conference Paper uri icon


  • The incipience of two-phase flow in discharging branches, from a stratified gas-liquid region, has major implications in industrial applications where safety is of primary concern. The transition from single phase liquid to a two phase gas-liquid mixture is termed the onset of gas entrainment, and may be formed by either vortex or vortex-free mechanisms. The two phase flow quality in the discharging branch is greatly impacted by vortex-free gas entrainment, as compared with gas entrainment due to vortex formation. Presented is a preliminary experimental investigation to demonstrate quantitative measurements of the liquid flow field at the onset of gas entrainment in a single discharging bottom branch. The three dimensional flow field is resolved into three horizontal planes and a single vertical plane. Results indicate a strong dependency of the flow field on the radial component, directed toward the branch center, and where a solid wall is present a larger tangential component.

name of conference

  • Volume 1: Symposia, Parts A and B

published proceedings

  • Volume 1: Symposia, Parts A and B

author list (cited authors)

  • Bowden, R. C., & Hassan, I. G.

citation count

  • 1

complete list of authors

  • Bowden, RC||Hassan, IG

publication date

  • January 2006