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Mean flow in round bubble plumes

Published online by Cambridge University Press:  20 April 2006

J. H. Milgram
J. H. Milgram
Affiliation:
Department of Ocean Engineering, MIT, Cambridge, MA 02139
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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.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 133 , August 1983 , pp. 345 - 376
Copyright
© 1983 Cambridge University Press

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