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Measurements of Skin Friction in a Plane Turbulent Wall Jet

Published online by Cambridge University Press:  04 July 2016

A. Sigalla
A. Sigalla*
Affiliation:
Formerly British Iron and Steel Research Association now Transport Division, Boeing Aircraft Co.
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Summary

Results of an experimental investigation of the distribution of skin friction along the wall of a plane turbulent wall jet are presented. The measurements show that it is possible to describe the variation of skin friction coefficient by a formula similar to the Blasius formula which is based on experimental results of turbulent pipe flow. This is simply achieved by considering the inner layer of fluid between the wall and the position where the velocity is a maximum as a boundary layer with an outer uniform free stream of velocity equal to the local maximum velocity.

Other measurements of velocity distribution indicate that within the experimental range and accuracy, the velocity profiles in the jet are similar and that the rate of change of velocity and width of the jet can be expressed by simple power laws. These results are then partially compared with theory.

Type
Research Article
Information
The Aeronautical Journal , Volume 62 , Issue 576 , December 1958 , pp. 873 - 877
Copyright
Copyright © Royal Aeronautical Society 1958

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References

1.Bakke, P. (1957). An Experimental Investigation of a Wall Jet. Journal of Fluid Mechanics, 2, p. 467, 1957.Google Scholar
2.Förthmann, E. (1934). Über turbulente Strahlausbreitung. Ingenieur-Archiv, 5, 42, also N.A.C.A. T.M. 789, 1934.CrossRefGoogle Scholar
3.Glauert, M. B. (1956). The Wall Jet. Journal of Fluid Mechanics, 1, p. 625, 1956.Google Scholar
4.Goldstein, S. (Ed.) (1938). Modem Developments in Fluid Dynamics, Vol. 2. Oxford University Press, 1938.Google Scholar
5.Preston, J. H. (1954). The Determination of Turbulent Skin Friction by Means of Pitot Tubes. Journal of the Royal Aeronautical Society, 58, p. 109, February 1954.Google Scholar
6.Schlichting, H. (1955). Boundary Layer Theory. Pergamon Press, London, 1955.Google Scholar
7.Sigalla, A. (1958). British Iron and Steel Research Association Report, P/2/58. List 92, 1958.Google Scholar
8.Zerbe, J. and Selna, J. (1946). An Empirical Equation for the Coefficient of Heat Transfer to a Flat Surface from a plane Heated-air Jet directed Tangentially to the Surface. N.A.C.A. T.N. 1070, 1946.Google Scholar