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Observations on transition in plane bubble plumes

  • M. Alam (a1) and V. H. Arakeri (a1)

Flow visualization studies of plane laminar bubble plumes have been conducted to yield quantitative data on transition height, wavelength and wave velocity of the most unstable disturbance leading to transition. These are believed to be the first results of this kind. Most earlier studies are restricted to turbulent bubble plumes. In the present study, the bubble plumes were generated by electrolysis of water and hence very fine control over bubble size distribution and gas flow rate was possible to enable studies with laminar bubble plumes. Present observations show that (a) the dominant mode of instability in plane bubble plumes is the sinuous mode, (b) transition height and wavelength are related linearly with the proportionality constant being about 4, (c) wave velocity is about 40% of the mean plume velocity, and (d) normalized transition height data correlate very well with a source Grashof number. Some agreement and some differences in transition characteristics of bubble plumes have been observed compared to those for similar single-phase flows.

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Alam, M. 1991 Flow visualization studies on transition and interaction of bubble plumes. MSc (Engng) thesis, Indian Institute of Science, Bangalore.
Arakeri, V. H. & Nair, B. G. 1990 Sonic velocity measurements in gas–liquid mixture with low void fractions. Curr. Sci. 59, 363367.
Baines, W. D. 1961 The principles of operation of bubbling systems. Proc. Symp. Air Bubbling, Ottawa. Tech. Mem. 70, pp. 1222. National Research Council (Canada).
Bill, R. G. & Gebhart, B. 1975 The transition of plane plumes. Intl J. Heat Mass Transfer 18, 513528.
Brown, G. L. & Roshko, A. 1974 On density effects and large structure in turbulent mixing layers. J. Fluid Mech. 64, 775816.
Clift, R., Grace, J. R. & Weber, M. E. 1978 Bubbles, Drops and Particles. Academic.
Gore, R. A., Crowe, C. T. & Bejan, A. 1990 The geometric similarity of the laminar sections of boundary layer-type flows. Intl Commun. Heat Transfer 17, 465475.
Ishii, M. 1975 Thermo-Fluid Dynamic Theory of Two-phase Flow. Paris: Eyrolles.
Jones, W. T. 1972 Air barriers as oil-spill containment devices. J. Soc. Petrol. Engng 12, 126142.
Kimura, S. & Bejan, A. 1983 Mechanism for transition to turbulence in buoyant plume flow. Intl J. Heat Mass Transfer 26, 15151532.
Leitch, A. M. & Baines, W. D. 1989 Liquid volume flux in a weak bubble plume. J. Fluid Mech. 205, 7798.
McDougall, T. J. 1978 Bubble plumes in stratified environments. J. Fluid Mech. 85, 665672.
Michalke, A. 1965 On spatially growing disturbances in an inviscid shear layer. J. Fluid Mech. 23, 521544.
Milgram, J. H. 1983 Mean flow in round bubble plumes. J. Fluid Mech. 133, 345376.
Schorr, A. W. & Gebhart, B. 1970 An experimental investigation of natural convection wakes above a line heat source. Intl J. Heat Mass Transfer 13, 557571.
Taylor, G. I. 1955 The action of a surface current used as a breakwater. Proc. Roy. Soc. A 231, 46678.
Wakitani, S. & Yosinobu, H. 1988 Transition to turbulence in a plane plume above a horizontal line source: measurement of flow properties and flow visualization. Fluid Dyn. Res. 2, 243259.
Wijngaarden, L. van 1972 One-Dimensional Flow of Liquids Containing Small Gas Bubbles. Ann. Rev. Fluid Mech. 4, 369396.
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Journal of Fluid Mechanics
  • ISSN: 0022-1120
  • EISSN: 1469-7645
  • URL: /core/journals/journal-of-fluid-mechanics
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