Speaker
Santiago A. Triana
(Institute of Astronomy, KU Leuven)
Description
A 3-meter diameter liquid-metal spherical-Couette flow, composed of a rotating
spherical container and a differentially rotating internal core, exhibits a sequence
of sharp and strong inertial mode oscillations when the (inner core to outer sphere)
rotation rate ratio is less than one or negative. At larger rotation ratios the flow
exhibit bi-stable fluctuations. These observations are relevant in an astrophysical
context, especially now after the recent discovery of gravito-inertial modes in two
different stars. A good understanding of the modes' driving mechanism in the
laboratory experiments might be of great help to unveil analogous mechanisms in stars.
Primary author
Santiago A. Triana
(Institute of Astronomy, KU Leuven)
