BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Investigating Pure Quantum Turbulence in Superfluid 3He and a Mean
 s of Directly Inferring the Turbulent Energy Content - Pickett\, G (Lancas
 ter University)
DTSTART:20121204T155000Z
DTEND:20121204T161000Z
UID:TALK41820@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:The lack of a general solution to the governing Navier-Stokes 
 equations means that there is no fundamental theory of turbulence. Simpler
  pure quantum turbulence\, the tangle of identical singly-quantized vortic
 es in superfluids at T~0 may provide a deeper understanding of turbulence 
 in general. In the present context this is especially relevant to the meas
 urement of the turbulent energy. While the well-known Kolmogorov theory pr
 edicts the energy distribution of turbulence and how it decays\, in normal
  systems the turbulent energy is generally only a small perturbation on th
 e total thermal energy of the supporting medium. In quantum turbulence\, h
 owever\, the turbulent energy is accessible. A stationary condensate is ne
 cessarily in its ground state with zero enthalpy. Thus any added quantum t
 urbulence accounts for the entire free energy of the superfluid and there 
 are no other contributions. \n\nIn superfluid 3He we can generated and det
 ect quantum turbulence and how it evolves with time\, and using bolometric
  methods\, we can measure the energy released as previously-generated turb
 ulence decays\, which seems to be unique to these systems. \n
LOCATION:Seminar Room 1\, Newton Institute
END:VEVENT
END:VCALENDAR