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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
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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

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