Category: List of Bases 2004 Throughout the year RESEARCH IN FLUID DYNAMICS

Title:

The Kelvin-wave cascade, and dissipation in quantum turbulence

Start Time:

11:00

Location:

ICTP (Main Building Seminar Room)

Contact:

triolo

Speaker(s):

W.F. Vinen FRS (University of Birmingham, UK)

Description:

Abstract: Quantized vortex lines allow a superfluid to rotate, and they are therefore important in superfluid, or quantum, turbulence. Turbulence often involves the flow of energy in a cascade from large scales to small scales. The way in which Kelvin waves on vortex lines can, through non-linear interactions, contribute to this flow will be discussed. Kelvin-wave cascades are likely to play a crucial role in the decay of quantum turbulence in liquid 4He at very low temperatures.