Dresden 2006 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
SYSS: Structure Formation and Self-Organization in non-equilibrium Systems
SYSS 3: Structure Formation and Self-Organization in non-equilibrium Systems - Poster
SYSS 3.20: Poster
Donnerstag, 30. März 2006, 16:00–18:00, P1
Coherent structures and energy fluxes in amplitude space in turbulent wave dynamics — •Benno Rumpf1, Guenter Radons1, Alan Newell2, and Laura Biven3 — 1Physics Institute, TU Chemnitz, 09107 Chemnitz, Germany — 2Mathematics Department, University of Arizona, Tucson, Arizona, USA — 3Max-Planck-Institut fuer Physik komplexer Systeme, 01187 Dresden, Germany
High-amplitude structures emerge intermittently from a background of low-amplitude disordered waves in nonequilibrium wave dynamics where a driving force is applied on long spatial scales, and damping at a short viscous scale. It is shown that the coherent structures cause an energy flux in amplitude space, while weakly interacting low-amplitude waves lead to an energy flux in wavenumber space.
[1] B.Rumpf, L.Biven, Weak turbulence in the Majda-McLaughlin-Tabak equation: Fluxes in wavenumber and in amplitude space, Physica D 204, 188-203, (2005)
[2] B.Rumpf, A.C.Newell, Intermittency as a consequence of turbulent transport in nonlinear systems, Phys.Rev.E 69, 026306, (2004)