project title: Hydrodynamics of Quantized Vortices in a Long Rotating Column: Kelvin-Wave Instability and Superfluid Turbulence
project leader: Dr. Rob Blaauwgeers
access given (in days): 123
access used (in days): 123
status: COMPLETED
local host: Prof. Matti Krusius
home institution: Leiden University
country of institution: The Netherlands
starting date (yyyy-mm-dd): 2005-03-01
objectives:
In a dynamic state, the stability of quantized vortices has been discovered to change as a function of temperature (or mutual friction damping) in superfluid helium-3: At high temperatures (and high damping) dynamic processes in externally applied flow are vortex number conserving and the solutions are deterministic. At low temperatures (and low damping) even a single isolated vortex loop manages to generate new vortices which ultimately interact to produce turbulence. We plan to investigate these instabilities.
achievements:
The measurements are prepared and are expected to start in June.