| Issue |
Europhys. Lett.
Volume 46, Number 3, May I 1999
|
|
|---|---|---|
| Page(s) | 339 - 345 | |
| Section | Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics | |
| DOI | https://doi.org/10.1209/epl/i1999-00266-0 | |
| Published online | 01 September 2002 | |
Decaying quasi-2D turbulence in a stratified fluid with circular boundaries
Department of Physics, Eindhoven University of Technology P.O. Box 513,
5600 MB Eindhoven, The Netherlands
Received:
19
October
1998
Accepted:
12
February
1999
Laboratory experiments on decaying quasi-2D turbulence are performed in a stratified flow inside a circular container. The observed decay scenario and the shape of the quasi-stationary "final” state depend strongly on the amount of net angular momentum in the initial flow field. Furthermore, the angular momentum appears to be a better conserved quantity than the total kinetic energy. These experimental observations agree remarkably well with recently reported results based on numerical simulations of the 2D Navier-Stokes equations with no-slip boundary conditions.
PACS: 47.32.Cc – Vortex dynamics / 47.55.Hd – Stratified flows
© EDP Sciences, 1999
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