|
| 05/15/02
| |
ZAHN Jean-Paul |
Observatoire de Paris |
| 5 place J. Janssen | SF2A- PNPS- |
|
92195 |
Meudon, France |
Presentation 1 : None
Shear Instabilities in Differential Rotation (PNPS)
Denis RICHARD & Jean-Paul ZAHN
Most astrophysical obsjects are in differential rotation, and are
therefore liable to shear instabilities. To better understand these
instabilities, a laboratory experiment has been performed in
collaboration with the Groupe Instabilites et Turbulence of CEA/Saclay.
It is a classical Couette-Taylor experiment, with fluid sheared
between two cylinders rotating at different speed. Its results will be
reported, which may be applied to the structure of stars and accretion
discs.