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Anomalous drag-reducing phenomenon at a water/fish-mucus or polymer interface

Published online by Cambridge University Press:  29 March 2006

S. C. Ling  and
T. Y. J. Ling
S. C. Ling
Affiliation:
Department of Aerospace and Atmospheric Sciences, The Catholic University of America, Washington DC 20017
T. Y. J. Ling
Affiliation:
Department of Zoology, University of Maryland, College Park, Maryland 20742
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Abstract

The sublayer of a turbulent boundary-layer flow with and without polymer additives was measured by a simple optical technique having a high degree of spatial resolution. The reduction of skin friction with polymer additives was found to be due to a decrease in the effective viscosity of water at the interface between the mucus (glycoprotein) or polymer (polyethylene oxide) and the water and a thickening of the laminar sublayer. The rate at which mucus diffuses away from a medium-sized fish is almost constant for all swimming speeds.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 65 , Issue 3 , 16 September 1974 , pp. 499 - 512
Copyright
© 1974 Cambridge University Press

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References

Aquino, H. & Lamontagne, R. 1973 A.I.A.A. 9th Ann. Meeting, paper 73–39.
Fredrickson, A. G. 1964 Principles and Applications of Rheology. Prentice-Hall.
Hinze, J. O. 1959 Turbulence, p. 527. McGraw-Hill.
Hoyt, J. W. 1972 Trans. A.S.M.E., J. Basic Engng, D94, 258.
Jakowska, S. 1963 New York Acad. Sci. Ann. 106, 458.
Ling, S. C. 1963 Trans. A.S.M.E., J. Heat Transfer, 85, 230.
Rosen, M. W. & Cornford, N. E. 1971 Nature, 234, 49.
Rudd, M. J. 1969 Nature, 224, 587.
Schlichting, H. 1968 Boundary-Layer Theory. McGraw-Hill.
Van Driest, E. R. 1970 J. Hydronautics, 4, 120.
Virk, P. S. 1971 J. Fluid Mech. 45, 417.
Walters, R. R. & Wells, C. S. 1971 J. Hydronautics, 5, 65.