Summary
A study of turbulent boundary layers was carried out using the hot-wire and film anemometry over smooth and riblet surfaces under different pressure gradient conditions. Detailed measurements into the near-wall turbulence structure indicated that the changes in time averaged turbulence quantities, produced by the addition of riblets, were not significantly altered by the presence of a longitudinal pressure gradient. This is in line with the previously reported results on the near-wall structure obtained by a conditional sampling technique.
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References
Bandyopadhyay, P.R. 1986. Review — Mean flow in turbulent boundary layer disturbed to alter skin friction. J. Fluid Engr., 108, 127.
Choi, K.-S. 1984. A survey of the turbulent drag reduction using passive devices. NMI Report R-193. NMI Ltd., Teddington, Middlesex.
Choi, K.-S., Pearcey, H.H. and Savill, A.M. 1987. Test of drag reducing riblets on a one-third scale racing yacht. Proc. International Conference on Turbulent Drag Reduction by Passive Means, London.
Choi, K.-S. 1989. Near-wall structure of turbulent boundary layer with riblets. J. Fluid Mech. 208, 417.
Choi, K.-S. and Johnson R. 1989. Pressure gradient effect on the turbulence structure over riblet surface. In Advances in Turbulence II, Eds. by Fernholz, H.-H. and Fiedler, H.E., Springer-Verlag.
Choi, K.-S. 1990. Drag-reduction test of riblets using ARE’s high speed buoyancy propelled vehicle — MOBY-D. Aeron J., March, 79.
Hooshmand, D. et al. 1983. An experimental study of changes in the structure of a turbulent boundary layer due to surface geometry changes. AIAA Paper 83–0230.
Kreplin, H.-P. and Eckelmann, H. 1979. Behaviour of the three fluctuating velocity components on the wall region of a turbulent channel flow. Physics of Fluids, 22, 1233.
Lumley, J.L. 1973. Drag reduction in turbulent flow by polymer additives. J. Polymer Sci.: Macromolecular Reviews, 7 263.
McDonald, H. 1969. The effect of pressure gradient on the law of the wall in turbulent flow. J. Fluid Mech., 35, 311.
McLean, J.D. et al. 1987. Flight-test of turbulent skin-friction reduction by riblets. Proc. Int. Conf. Turbulent Drag Reduction by Passive Means, London.
Mellor, L.G. 1966. The effects of pressure gradients on turbulent flow near a smooth wall. J. Fluid Mech., 24, 255.
Nieuwstadt, F.T.M. et al. 1989. Some experiments on riblet surfaces in a towing tank. In Drag reduction in fluid flows: Techniques for friction control, eds. by Sellin, R.H.J. and Moses, R.T., Ellis Horwood.
Patel, V.C. 1965. Calibration of the Preston tube and limitations of its use in pressure gradients. J. Fluid Mech., 23, 185.
Savill, A.M. et al. 1988. Turbulent drag reduction by passive means: a review and report on the first European drag reduction meeting. J. Theoretical and Applied Mechanics, 7, 353.
Sawyer, W.G. and Winter, K.G. 1987. An investigation of the effect on turbulent skin friction of surfaces with streamwise grooves. Proc. Int. Conf. on Turbulent Drag Reduction by Passive Means, London.
Squire, L.C. and Savill, A.M. 1987. Some experiences of riblets at transonic speeds. Proc. Int. Conf. Turbulent Drag Reduction by Passive Means, London.
Ueda, H. and Hinze, J.O. 1975. Fine structure turbulence in the wall region of a turbulent boundary layer, J. Fluid Mech., 67, 125.
Wallace, J.M., Eckelmann, H. and Brodkey, R.S. 1972. The wall region in turbulent shear flow. J. Fluid Mech., 54, 39.
Wilkinson, S.P. et al. 1987. Turbulent drag reduction research at NASA Langley — progress and plans. Proc. Int. Conf. on Turbulent Drag Reduction by Passive Means, London.
Willmarth, W.W. and Lu, S.S. 1972. Structure of the Reynolds stress near the wall. J. Fluid Mech., 55, 65.
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© 1990 Kluwer Academic Publishers
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Choi, KS. (1990). Effects of Longitudinal Pressure Gradients on Turbulent Drag Reduction with Riblets. In: Coustols, E. (eds) Turbulence Control by Passive Means. Fluid Mechanics and its Applications, vol 4. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-2159-7_7
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DOI: https://doi.org/10.1007/978-94-009-2159-7_7
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-7471-1
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