Starts 15 Jan 2008 12:30
Ends 15 Jan 2008 20:00
Central European Time
SISSA - Lecture Room 'D'
This is a review of most fundamental (symmetry) aspects of turbulence for a physical audience. To excite turbulence, one needs an external pumping; to keep it in a steady state one needs dissipation. Pumping and dissipation break symmetries like time-reversibility, isotropy, scale invariance. Since pumping and dissipation act on vastly different scales, the question appears what are the statistical properties of a system at the intermediate scales (called inertial interval or transparency window). I shall describe both anomalies (when the symmetry is not restored even when the symmetry-breaking factor goes to zero) and emerging symmetries like conformal invariance. In the latter case, by using the language of Schramm-Loewner Evolution for analysis of fractal clusters, one discovers a surprising similarity between critical phenomena and turbulence.
  • M. Poropat