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Wind-augmented transport and dilution in shallow-water flows

Published online by Cambridge University Press:  26 April 2006

Ronald Smith
Ronald Smith
Affiliation:
Department of Mathematical Sciences, University of Technology, Loughborough, LE11 3TU, UK
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Abstract

Wind blowing across shallow water contributes to secondary flow across a vertical section. For particles which are not neutrally buoyant the vertical sampling of the secondary flow is non-uniform: buoyant material drifts with the wind and slightly dense material is carried against the wind. This paper focuses attention on the joint dependence of the horizontal dilution rates upon the strength of the wind-augmented current and upon the vertical rise (or sinking) velocity of the particles. In strong wind the greatly enhanced mixing counterbalances the onshore drift and explains why shoreline pollution is not significantly correlated to the onshore wind.

Information

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 228 , July 1991 , pp. 549 - 560
Copyright
© 1991 Cambridge University Press

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References

Elder, J. W. 1959 The dispersion of marked fluid in turbulent shear flow. J. Fluid Mech. 5, 544–560.Google Scholar
Fischer, H. B. 1969 The effects of bends on dispersion in streams. Water Resources Res. 5, 496–506.Google Scholar
Gameson, A. L. H., Bufton, A. W. J. & Gould, D. J. 1967 Studies of the coastal distribution of coliform bacteria in the vicinity of a sea outfall. Wat. Pollut. Control 66, 501–523.Google Scholar
Giddings, J. C. 1968 Nonequilibrium theory of field-flow fractionation. J. Chem. Phys. 49, 82–85.Google Scholar
Munro, D. & Mollowney, B. M. 1974 The effect of a bottom countercurrent and vertical diffusion on coliform concentrations at the shore due mainly to wind-induced onshore currents. Rapp. P.-V. Réun. Cons. Perm. Int. Explor. Mer 167, 37–40.Google Scholar
Smith, R. 1983 Longitudinal dispersion coefficients for varying channels. J. Fluid Mech. 130, 299–314.Google Scholar
Smith, R. 1986 Vertical drift and reaction effects upon contamination dispersion in parallel shear flows. J. Fluid Mech. 165, 425–444.Google Scholar
Taylor, G. I. 1953 Dispersion of soluble matter in solvent flowing slowly through a tube.. Proc. R. Soc. Lond. A 219, 186–203.Google Scholar