The Flow Generated in a Stratified Fluid by the Motion of a Flat Horizontal Disk

  • Peter A. Davies
  • Yakun Guo
  • Andrew M. Folkard
  • Don L. Boyer
Part of the Fluid Mechanics and Its Applications book series (FMIA, volume 34)

Abstract

The response of a stratified fluid to the imposition of a surface stress has long been a topic of interest in geophysical fluid dynamics because of the relevance of the problem to mixing and overturning in large lakes, reservoirs and ocean basins. In the first definitive laboratory investigations (e.g Kato and Phillips, 1969; Kantha et al., 1977; Scranton and Lindberg, 1983) in this area, a linearly-stratified fluid contained in an annular tank was subjected to a constant surface stress imposed by the motion of a rotating screen and the process of entrainment was thereby initiated. As a result, a so-called mixed layer was generated, the thickness of which grew with time at a rate dependent upon the appropriate Richardson number of the established flow. In the annular geometry, the presence of secondary flows ensured that the development of the mixed layer was three-dimensional. Further experiments have been carried out by many authors since the above investigations and the reader is referred specifically to the recent article by Fernando (1991) for a comprehensive record and review of the resulting data

Keywords

Mixed Layer Vortex Motion Vorticity Field Stratify Fluid Large Disk 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Davies, P A., Guo, Y.K., Boyer, D.L. and Folkard, AM. (1995), The Flow Generated by the rotation of a horizontal disk in a stratified fluidFluid Dyn. Res (in pressGoogle Scholar
  2. Fernando, H.J.S. (1991), Turbulent mixing in stratified fluidsAnn. Rev. Fluid Mech 23, 455 – 493CrossRefGoogle Scholar
  3. Head, M. J. (1983), The use of four-electrode conductivity probes for high resolution measurement of turbulent density or temperature variation in salt-stratified water flowsPhD dissertation, University of California, San Diego Google Scholar
  4. Kantha, L.H., Phillips, O.M. and Azad, R.S. (1977), On turbulent entrainment at a stable density interfaceJ. Fluid Mech 79, 753–768.CrossRefGoogle Scholar
  5. Kato, H. and Phillips, O.M. (1969), On the penetration of a turbulent layer into stratified fluidJ. Fluid Mech 37, 643 – 655CrossRefGoogle Scholar
  6. Oster, G. (1964), Density gradientsScientif. Amer 213, 70 – 76CrossRefGoogle Scholar
  7. Scranton, D.R. and Lindberg W.R. (1983), An experimental study of entraining, stress-driven stratified flow in an annulusPhys. Fluids 265), 1198 – 1205CrossRefGoogle Scholar

Copyright information

© Kluwer Academic Publishers 1996

Authors and Affiliations

  • Peter A. Davies
    • 1
  • Yakun Guo
    • 1
  • Andrew M. Folkard
    • 1
  • Don L. Boyer
    • 2
  1. 1.Department of Civil EngineeringThe UniversityDundeeUK
  2. 2.Department of Mechanical and Aerospace EngineeringArizona State UniversityTempeUSA

Personalised recommendations