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Analysis of air-bubble plumes

Cederwall, Klas and Ditmars, John D. (1970) Analysis of air-bubble plumes. California Institute of Technology , Pasadena, CA. (Unpublished)

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The air-bubble plume induced by the steady release of air into water has been analyzed with an integral technique based on the equations for conservation of mass, momentum and buoyancy. This approach has been widely used to study the behavior of submerged turbulent jets and plumes. The case of air-bubble induced flow, however, includes additional features. In this study the compressibility of the air and the differential velocity between the rising air bubbles, and the water are introduced as basic properties of the air-bubble plume in addition to a fundamental coefficient of entrainment and a turbulent Schmidt number characterizing the lateral spreading of the air bubbles. Theoretical solutions for two- and three-dimensional air-bubble systems in homogeneous, stagnant water are presented in both dimensional and normalized form and compared to existing experimental data. The further complication of a stratified environment is briefly discussed since this case is of great practical interest. This paper is to be considered as a progress report, as future experimental verification of various hypotheses is needed.

Item Type:Report or Paper (Technical Report)
Additional Information:The writers would like to acknowledge valuable discussions with Drs. Norman H. Brooks and E. John List. For typing the manuscript we are indebted to Mrs. Arvilla F. Krugh. This work has been supported by the Federal Water Quality Administration, Research Grant No. 16070 DGY. The first writer has had a stipend paid by the Swedish Board of Technological Development (STU) and the second writer a U. S. Public Health Service Training Grant.
Group:W. M. Keck Laboratory of Hydraulics and Water Resources
Record Number:CaltechKHR:KH-R-24
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Usage Policy:You are granted permission for individual, educational, research and non-commercial reproduction, distribution, display and performance of this work in any format.
ID Code:25998
Deposited By: Imported from CaltechKHR
Deposited On:09 Dec 2009
Last Modified:03 Oct 2019 03:10

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