Hostname: page-component-cd9895bd7-hc48f Total loading time: 0 Render date: 2024-12-19T02:52:56.191Z Has data issue: false hasContentIssue false
  • English
  • Français

On the effect of a sharp bend in a fully developed turbulent pipe-flow

Published online by Cambridge University Press:  28 March 2006

M. J. Tunstall  and
J. K. Harvey
M. J. Tunstall
Affiliation:
Department of Aeronautics, Imperial College, London, S.W.7
J. K. Harvey
Affiliation:
Department of Aeronautics, Imperial College, London, S.W.7
Get access Rights & Permissions [Opens in a new window]

Abstract

It has been found experimentally that the turbulent pipe flow through a mitred, right-angle bend produces a downstream secondary circulation which does not conform to the twin-circulatory flow usually to be found in pipe bends. The secondary flow is dominated by a single circulation about the axis in either a clockwise or an anticlockwise sense, between which it switches abruptly at a low, random frequency. The phenomenon is explained in terms of the asymmetry of the inner wall separation and the turbulent axial circulation generated in the upstream flow.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 34 , Issue 3 , 2 December 1968 , pp. 595 - 608
Copyright
© 1968 Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Barua, S. N. 1963 Quart. J. Mech. Appl. Maths. 16, 61.
Boussinesq, M. J. 1868 J. Math. Pures Appl. (Ser. 2) 13, 377.
Curtiss, H. A., Feil, O. G. & Liquorrik, D. J. 1964 A.F.O.S.R. Sci. Rep. no. 64-0860.
Dean, W. R. 1927 Phil. Mag. J. Sci. (Ser. 7) 4, 204.
Dean, W. R. 1928 Phil. Mag. J. Sci. (Ser. 7) 5, 673.
Hawthorne, W. R. 1961 Seminar on Aeronautical Sciences.
Hinze, J. O. 1959 Turbulence. New York: McGraw-Hill.
Ito, H. 1959 J. Basic Eng. 81, 123.
Laufer, J. 1953 N.A.C.A. TN no. 2954.
Thomson, J. 1876 Proc. Roy. Soc. A 25, 5–8, 356, 357.
Townsend, A. A. 1956 The Structure of Turbulent Shear Flow. Cambridge University Press.
Weske, J. R. 1948 N.A.C.A. TN no. 1471.