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The Specification of Shear Stresses in Estuary Models

  • Roy E. Lewis
Conference paper
Part of the Coastal and Estuarine Studies book series (COASTAL, volume 36)

Synopsis

The widespread use of a coefficient of eddy viscosity, Nz, to describe the vertical distribution of shear stress in estuary models may not be justified. The concept of shear stress has a more sound physical basis than Nz and offers more scope since stresses can be determined directly from measurements in estuaries. Above the constant stress layer at the bed, the stress can be considered to be made up of a boundary layer drag which decreases linearly with height and a variable internal stress associated with accelerations and density structure in the flow.

Keywords

Shear Stress Eddy Viscosity Flood Tide Shear Stress Profile Residual Internal Stress 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Abraham, G (1980) On internally generated estuarine turbulence Second International Symposium on Stratified Flows, Norwegian Institute of Technology, Trondheim, Norway.Google Scholar
  2. Bowden,K.F., Fairbairn,L.A. & Hughes,P. (1959) The distribution of shearing stresses in a tidal current Geophysical Journal of Royal Astronomical Society, 2, N4, 288–305CrossRefGoogle Scholar
  3. Bowden,K.F. & Hamilton,P. (1975) Some experiments with a numerical model of circulation and mixing in a tidal estuary Estuarine and Coastal Marine Science, 3, 281–301Google Scholar
  4. Duncan,W.J.,Thorn,A.S. & Young,A.D. (1970) Mechanics of Fluids Edward Arnold, Great BritainGoogle Scholar
  5. Lewis,R.E. & Lewis,J.O. (1987) Shear stress variations in an estuary Estuarine, Coastal and Shelf Science, 25, 621–635Google Scholar
  6. Officer,C.B. (1976) Physical Oceanography of Estuaries (and Associated Coastal Waters) John Wiley, New YorkGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1990

Authors and Affiliations

  • Roy E. Lewis
    • 1
  1. 1.ICI Brixham LaboratoryBrixham DevonUK

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