Nonlinear Sciences – Chaotic Dynamics
Scientific paper
1995-10-16
Nonlinear Sciences
Chaotic Dynamics
30 pages Revtex.The figures will be sent on request to gilson@crtbt.polycnrs-gre.fr or dombre@crtbt.polycnrs-gre.fr
Scientific paper
The multiscaling properties of the mixed Obukhov-Novikov shell model of turbulence are investigated numerically and compared with those of the complex GOY model, mostly studied in the recent years. Two types of generic singular fluctuations are identified~: first, self-similar solutions propagating from large to small scales and building up intermittency, second, complex time singularities inhibiting the cascade and promoting chaos. A simple and robust method is proposed to track these objects. It is shown that the scaling exponent of self-similar solutions selected by the dynamics is compatible with large order statistics whenever it departs enough from the Kolmogorov value. Complex time singularities on the other hand get trapped on the last shells, when the proportion of Novikov interactions exceeds a critical value which is argued to mark the boundary between chaotic and regular dynamics in the limit of infinite Reynolds number.
Dombre Thierry
Gilson Jean-Louis
No associations
LandOfFree
Intermittency, chaos and singular fluctuations in the mixed Obukhov-Novikov shell model of turbulence does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Intermittency, chaos and singular fluctuations in the mixed Obukhov-Novikov shell model of turbulence, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intermittency, chaos and singular fluctuations in the mixed Obukhov-Novikov shell model of turbulence will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-497951