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The nozzle-fluid concentration field of the round, turbulent, free jet

Published online by Cambridge University Press:  28 March 2006

H. A. Becker ,
H. C. Hottel  and
G. C. Williams
H. A. Becker
Affiliation:
Department of Chemical Engineering, Massachusetts Institute of Technology Present address: Department of Chemical Engineering, Queen's University, Kingston, Ontario, Canada.
H. C. Hottel
Affiliation:
Department of Chemical Engineering, Massachusetts Institute of Technology
G. C. Williams
Affiliation:
Department of Chemical Engineering, Massachusetts Institute of Technology
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Abstract

The light-scatter technique has been used to study the nozzle-fluid concentration field in an isothermal, turbulent, axisymmetric air/air free jet with the nozzle air marked by an oil smoke. The data on the mean concentration field appear to be the most accurate yet obtained, due to the peculiar advantages of the technique. The turbulent concentration fluctuations have been characterized as to intensity, spectral distribution, and two-point correlation. The intermittency factor has been measured and the properties of the turbulent fluid computed. Comparison with the results of other investigators who used heat to mark the nozzle fluid indicates a close similarity between the concentration and temperature fields.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 30 , Issue 2 , 9 November 1967 , pp. 285 - 303
Copyright
© 1967 Cambridge University Press

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