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A turbulent mixing layer constrained by a solid surface. Part 2. Measurements in the wall-bounded flow

Published online by Cambridge University Press:  20 April 2006

D. H. Wood  and
P. Bradshaw
D. H. Wood
Affiliation:
Department of Aeronautics, Imperial College, London Present address: Department of Mechanical Engineering, University of Newcastle, N.S.W. 2308, Australia.
P. Bradshaw
Affiliation:
Department of Aeronautics, Imperial College, London
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Abstract

The single- and two-point measurements made in a high-Reynolds-number single-stream mixing layer growing to encounter a wind-tunnel floor on its high-velocity side that were described by Wood & Bradshaw (1982) have been extended to the wall-bounded flow. It is shown that the expected large amplification of the normal-stress components in the plane of the wall does not occur until after the mixing layer reaches the surface. There is some evidence that the double-roller component of the large-eddy structure of the original free shear layer is being re-established in the wall-bounded flow after having been stretched and weakened by the initial effect of the wall. The triple-product terms appearing in the turbulent-energy and shear-stress equations are altered in a way that cannot be reproduced by models used in current calculation methods. It appears that all the pressure-fluctuation terms in the individual normal-stress and shear-stress transport equations respond in a non-monotonic manner to the imposition of the wall. The implications for calculation methods suitable for predicting the change from an initially unaffected free shear layer to a wall-bounded flow are discussed.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 139 , February 1984 , pp. 347 - 361
Copyright
© 1984 Cambridge University Press

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References

Andreopoulos, J. & Wood, D. H. 1982 J. Fluid Mech. 118, 143.
Bradshaw, P. 1967 J. Fluid Mech. 30, 241.
Bradshaw, P. 1975 Trans. ASME I: J. Fluids Engng 97, 146.
Bradshaw, P. 1976 In Proc. 14th Intl Congr. Appl. Mech. (ed. W. T. Koiter), p. 101. North-Holland.
Cormack, D. E., Leal, L. G. & Seinfeld, J. H. 1978 Trans. ASME I: J. Fluids Engng 100, p. 47.
Gibson, M. M. & Launder, B. E. 1978 J. Fluid Mech. 86, 441.
Grant, H. L. 1958 J. Fluid Mech. 4, 149.
Hunt, J. C. R. & Graham, J. M. R. 1978 J. Fluid Mech. 84, 209.
Kline, S. J., Cantwell, B. J. & Lilley, G. M. (eds.) 1982 Proc. 1981 Stanford Conf. on Complex Turbulent Flows, vol. II.
Launder, B. E., Reece, G. J. & Rodi, W. 1975 J. Fluid Mech. 68, 537.
Smits, A. J., Young, S. T. B. & Bradshaw, P. 1979 J. Fluid Mech. 94, 209.
Thomas, N. H. & Hancock, P. E. 1978 J. Fluid Mech. 82, 481.
Townsend, A. A. 1961 J. Fluid Mech. 11, 97.
Wills, J. A. B. 1964 J. Fluid Mech. 20, 417.
Wood, D. H. 1980 A reattaching, turbulent thin shear layer. Ph.D. thesis, Imperial College, London.
Wood, D. H. & Bradshaw, P. 1982 J. Fluid Mech. 122, 57.
Wood, D. H. & Ferziger, J. H. 1983 The potential flow bounded by a mixing layer and a solid surface. Univ. Newcastle, Mech. Engng Dept. T.N.-F.M. 83/5, and Imperial College Aero TN 83–104.Google Scholar