Hostname: page-component-78c5997874-s2hrs Total loading time: 0 Render date: 2024-11-13T01:33:20.549Z Has data issue: false hasContentIssue false
  • English
  • Français

Measurements of a laminar wake in a confined stratified fluid

Published online by Cambridge University Press:  29 March 2006

P. Laws  and
T. N. Stevenson
P. Laws
Affiliation:
Department of the Mechanics of Fluids, University of Manchester
T. N. Stevenson
Affiliation:
Department of the Mechanics of Fluids, University of Manchester
Get access Rights & Permissions [Opens in a new window]

Abstract

Two-dimensional upstream and downstream wakes are produced by extremely slowly moving cylinders in a tank containing a linearly stratified salt solution. The upstream and downstream wakes appear to be of comparable strength, consistent with the symmetry predicted by theories that take account of density diffusion as well as viscosity. This contrasts with the quasi-non-diffusive régime recently studied experimentally by Browand & Winant (1972). The present velocity profiles are essentially similar to those predicted by diffusion theories, althought the magnitudes of the velocities appear to be greatly attenuated by the proximity of the upstream and downstream walls.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 54 , Issue 4 , 22 August 1972 , pp. 745 - 748
Copyright
© 1972 Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Browand, F. K. & Winant, C. D. 1972 Blocking ahead of a cylinder moving in a stratified fluid: an experiment. Geophy. Fluid Dyn. 3. (To be published.)Google Scholar
Foster, M. R. & Saffman, P. G. 1970 The drag of a body moving transversely in a confined stratified fluid. J. Fluid Mech. 43, 407–418Google Scholar
Freund, D. & Meyer, R. E. 1972 On the mechanism of blocking in a stratified fluid J. Fluid Mech. 54, 719–744.Google Scholar
Graebel, W. P. 1969 On the slow motion of bodies in stratified and rotating fluids Q. J. Mech. Appl. Math. 22, 39–54.Google Scholar
Janowitz, G. S. 1967 On wakes in stratified fluids. Dept. Mechanics, The John Hopkins University. Tech. Rep. no. 22 (ONR series) Nonr-4010(01).Google Scholar
Janowitz, G. S. 1968 On wakes in stratified fluids J. Fluid Mech. 33, 417–432.Google Scholar
Janowitz, G. S. 1971 The slow transverse motion of a flat plate through a non-diffusive stratified fluid J. Fluid Mech. 47, 171–181.Google Scholar
Stevenson, T. N. & Thomas, N. H. 1969 Two-dimensional internal waves generated by a travelling oscillating cylinder J. Fluid Mech. 36, 505–511.Google Scholar