Structure of air-water bubbly flow in a vertical pipe—I. liquid mean velocity and turbulence measurements

The liquid-phase turbulent structure of an air water, bubbly upflow in a circular pipe has been investigated experimentally. Liquid-phase local velocities and turbulent stresses were simultaneously measured, using both one- and two-dimensional hot-film anemometer probes. A highly-accurate digital pr...

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Bibliographic Details
Published in:International journal of heat and mass transfer 1993, Vol.36 (4), p.1049-1060
Main Authors: Liu, T.J., Bankoff, S.G.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fluid dynamics
Fundamental areas of phenomenology (including applications)
Nonhomogeneous flows
Physics
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Summary:The liquid-phase turbulent structure of an air water, bubbly upflow in a circular pipe has been investigated experimentally. Liquid-phase local velocities and turbulent stresses were simultaneously measured, using both one- and two-dimensional hot-film anemometer probes. A highly-accurate digital process method, based on threshold combinations of level and slope, was developed to identify the phases. Systematic measurements were conducted under 48 flow conditions covering a range of local void fraction from 0 to 50%. The important experimental results and parametric trends are summarized and discussed. Finally, the present data are compared with some other data sources and existing models.
ISSN:0017-9310
1879-2189
DOI:10.1016/S0017-9310(05)80289-3