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A technique for the direct measurement of volume flux of a plume

Published online by Cambridge University Press:  20 April 2006

W. Douglas Baines
W. Douglas Baines
Affiliation:
Department of Mechanical Engineering, University of Toronto, Toronto, Canada, M5S 1A4
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Abstract

It is observed that an interface is established in any open-ended vertical cylinder when a plume flows in the direction of a mean flow through the cylinder. The location of the interface defines the volume flux of the plume because the total discharge in the environment has been entrained at this level. Experiments have been conducted to verify this relation and to define the limits within which the interface is established. It is found that, as the buoyancy in the plume is reduced or the area of the environment is reduced, limits do exist. An application of the interface in industrial-building ventilation is described.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 132 , July 1983 , pp. 247 - 256
Copyright
© 1983 Cambridge University Press

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References

Baines, W. D. & Keffer, J. F. 1975 Entrainment by a multiple source turbulent jet Adv. Geophys. 18b, 189–198.Google Scholar
Baines, W. D. & Turner, J. S. 1969 Turbulent buoyant convection from a source in a confined region J. Fluid Mech. 37, 51–80.Google Scholar
Chu, V. H., Senior, C. & List, J. 1981 ASME Paper 81-FE-29.
Ricou, F. P. & Spalding, D. B. 1961 Measurements of entrainment by axisymmetrical turbulent jets J. Fluid Mech. 11, 21–32.Google Scholar