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The development and structure of turbulent plane jets

Published online by Cambridge University Press:  19 April 2006

K. W. Everitt  and
A. G. Robins
K. W. Everitt
Affiliation:
Department of Aeronautics, Imperial College, London Present address: University of Warwick, Coventry CV4 7AL.
A. G. Robins
Affiliation:
Department of Aeronautics, Imperial College, London Present address: Marchwood Engineering Laboratories, Hampshire SO4 4ZB.
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Abstract

The structure and development of turbulent plane jets in still air and moving streams are described. The nature of the small-scale turbulence cannot be accurately ascertained because of the difficulties inherent in the measurement of dissipation in highly turbulent flows. Although correlation measurements in a jet in still air indicate a large-scale structure which can best be described as ‘local flapping’, measurements in a jet in a moving stream do not reveal a similar structure. The development of the turbulence structure in a jet in a moving parallel stream is described and the properties of turbulent jets and wakes are shown to be reasonably well predicted by the use of a variable-eddy-viscosity formula together with the formal self-preserving properties of the equations of motion.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 88 , Issue 3 , 13 October 1978 , pp. 563 - 583
Copyright
© 1978 Cambridge University Press

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