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Laminar light particle and liquid two-phase flows in a vertical pipe

Authors
Journal
International Journal of Multiphase Flow
0301-9322
Publisher
Elsevier
Publication Date
Volume
29
Issue
4
Identifiers
DOI: 10.1016/s0301-9322(03)00017-x
Keywords
  • Particle–Liquid Flow
  • Bubbly Flow
  • Phase Distribution
  • 3D Pit
  • Wall Shear Stress
  • Bubble Deformation
  • Lift Force

Abstract

Abstract Dilute laminar expanded polystyrene particle–oil flows in a vertical pipe were studied using a three-dimensional particle image tracking (PIT) method. The particle volume fraction profiles and other flow properties for the upward fully developed flows were measured. The experimental results showed that the particles in both the large and small particle and oil flows have a wall-peaked distribution similar to those of near-spherical bubbles in laminar bubbly flows. The ordered particle distribution structure consisting of particle clusters and its transition to disordered flow structures were observed. Comparisons between the bubble and particle volume fraction profiles indicate that the major difference of two-phase flow properties may result from bubble deformation.

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