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The Eddy Dijfiisivity in Annular Flow

Published online by Cambridge University Press:  04 July 2016

Henry Barrow
Henry Barrow*
Affiliation:
Department of Mechanical Engineering, University of Liverpool
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Extract

An investigation into the turbulent flow characteristics in a smooth-walled annulus has been continued. Velocity and its correlation has already been dealt with in the author's note in the November 1958 JOURNAL (p. 830). In the work presented here, the eddy diffusivity in gas flow is discussed, its distribution predicted, and experimental results for the eddy difiusivity of heat in an insulated annulus with a heated inner wall are included in support.

The distributions of velocity, shear, temperature and heat flux for an annular flow with heat transfer at the inner boundary are shown diagrammatically in Fig. 1. The features of the turbulent velocity profile and methods of correlating velocity distribution are outlined in Ref. 1. The shearing stress T is given by the equation

Type
Technical notes
Information
The Aeronautical Journal , Volume 63 , Issue 579 , March 1959 , pp. 180 - 181
Copyright
Copyright © Royal Aeronautical Society 1959

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References

1.Barrow, H. (1958). Annular Flow—A Note on the Turbulent Velocity Profile. Journal of the Royal Aeronautical Society. November 1958.CrossRefGoogle Scholar
2.Rothfus, R. R., Monrad, C. C. and Senecal, V. E. (1950). Velocity Distribution and Fluid Friction in Smooth Concentric Annuli. Industrial Engineering Chemistry, Vol. 42(2), p. 2511, 1950.Google Scholar
3.Barrow, H. (1955). Fluid Flow and Heat Transfer in an Annulus with a Heated Core Tube. Proc. of the Institution of Mechanical Engineers, Vol. 169, p. 1, 113, 1955.Google Scholar