Mean flow in round bubble plumes

Author:

Milgram J. H.

Abstract

Previous experimental studies are reviewed and those whose data are deemed reliable are identified. New experiments at larger scale are described and the results are reported. These are combined with the reliable previous studies to form a data set covering heights from 3.66 to 50 m and gasflow rates from 0.0002 to 0.59 normal m3/s. These wide-ranging data are combined with an integral theory for bubble plumes to determine functional relationships between local plume properties and the entrainment coefficient and the fraction of the momentum flux that is carried in the turbulent velocity fluctuations. These relationships together with the integral theory provide a set of equations that are suitable for numerical solution for the mean flow properties of any round bubble plume. Examples of the numerical solutions are presented and a comparison of one of these with existing experimental data is given. The relationships between the local plume properties and the entrainment coefficient and the momentum flux carried by the turbulence are interpreted to provide a qualitative understanding of the parameters involved and their influences on the plume.

Publisher

Cambridge University Press (CUP)

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics

Reference17 articles.

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3. Bishoni, P. R. & Maim, B. B. 1979 Laboratory study of behavior of oil and gas particles in salt water relating to deep oil well blowouts.Spill Technology Newsletter, Environmental Protection Service, Hull, Quebec, EPS-3-ED-80-1, 4[1],24–36.

4. George, W. K. & Alpert, R. L. & Tamanini, F. 1977 Turbulence measurements in an axisymmetric buoyant plume Intl J. Heat Mass Transfer 20,1145–1154.

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