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Velocity distributions in plane turbulent channel flows

Published online by Cambridge University Press:  19 April 2006

M. M. M. El Telbany  and
A. J. Reynolds
M. M. M. El Telbany
Affiliation:
Department of Mechanical Engineering, Brunel University, Uxbridge, Middlesex, England Permanent address: Faculty of Engineering, Helwan University, Egypt.
A. J. Reynolds
Affiliation:
Department of Mechanical Engineering, Brunel University, Uxbridge, Middlesex, England
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Abstract

Measurements of time-mean velocity have been made in a flat channel (aspect ratio 12 to 28), one of whose walls consists of a belt which can be moved in the direction of air blown through the channel or in the opposite direction. The wall layers generated in twenty-six turbulent flows, including plane Poiseuille and plane Couette cases, are compared with analytical results obtained by Kader & Yaglom and by Townsend. Empirical descriptions are developed for the viscous, logarithmic and gradient portions of these wall layers. The core regions of both Couette-type and Poiseuille-type flows are also described empirically. Parallels are drawn with developing boundary layers, and phenomena are identified that relate to the relaminarization of boundary layers.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 100 , Issue 1 , 11 September 1980 , pp. 1 - 29
Copyright
© 1980 Cambridge University Press

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References

Comte-Bellot, G. 1965 Ecoulement turbulent entre deux parois parallèles. Publications Scientifiques et Techniques du Ministère de l'air no. 419.Google Scholar
Constantinescu, V. N. 1959 On turbulent lubrication. Proc. Inst. Mech. Eng. 173, 881–900.Google Scholar
Hanjali, K. & Launder, B. E. 1972 Fully developed asymmetric flow in a plane channel. J. Fluid Mech. 51, 301–335.Google Scholar
Hinze, J. O. 1975 Turbulence, 2nd edn. McGraw-Hill.
Huey, L. J. & Williamson, J. W. 1974 Plane-turbulent Couette flow with zero-net flow. Trans. A.S.M.E. E, J. Appl. Mech. 41, 885–890.Google Scholar
Hussain, A. K. M. F. & Reynolds, W. C. 1975 Measurements in fully developed turbulent channel flow. Trans. A.S.M.E. I, J. Fluids Engng 97, 568–578.Google Scholar
Kader, B. A. & Yaglom, A. M. 1978 Similarity treatment of moving-equilibrium turbulent boundary layers in adverse pressure gradients. J. Fluid Mech. 89, 305–342.Google Scholar
Laufer, J. 1951 Investigation of turbulent flow in a two-dimensional channel. N.A.C.A. Rep. 1053.Google Scholar
Reynolds, A. J. 1963 Analysis of turbulent bearing films. J. Mech. Engng Sci. 5, 258–272.Google Scholar
Reynolds, A. J. 1965 Wall layers with non-uniform shear stress. J. Fluid Mech. 22, 443–448.Google Scholar
Reynolds, A. J. 1974 Turbulent Flows in Engineering. Wiley.
Robertson, J. M. & Johnson, H. F. 1970 Turbulence structure in plane Couette flow. Proc. A.S.C.E., J. Engng Mech. 96, 1171–1182.Google Scholar
Saibel, E. A. & Macken, N. A. 1974 Nonlaminar behaviour in bearings. A critical review of the literature. Trans. A.S.M.E. F, J. Lub. Tech. 96, 174–181.Google Scholar
Szeri, A. A., Yates, C. C. & Hai, S. M. 1976 Flow development in parallel plate channel. Trans. A.S.M.E. F, J. Lub. Tech. 98, 145–156.Google Scholar
Townsend, A. A. 1961 Equilibrium layers and wall turbulence. J. Fluid Mech. 11, 97–120.Google Scholar