Physics – Fluid Dynamics
Scientific paper
2009-03-12
Physics
Fluid Dynamics
4 pages, 4 figures
Scientific paper
Invariance properties of a physical system govern its behavior: energy conservation in turbulence drives a wide distribution of energy among modes, as observed in geophysics, astrophysics and engineering. In hydrodynamic turbulence, the role of helicity (which measures departures from mirror symmetry) remains unclear since it does not alter this distribution. However, the interplay of rotation and helicity leads to significant differences. Using numerical simulations we show the occurence of long-lived laminar cyclonic vortices together with turbulent vortices, reminiscent of recent tornado observations. Furthermore, the small scales are completely self-similar with no deviations from Gaussianity. This result points to the discovery of a small parameter in rotating helical turbulence.
Mininni Pablo Daniel
Pouquet Annick
No associations
LandOfFree
Persistent cyclonic structures in self-similar turbulent flows 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 Persistent cyclonic structures in self-similar turbulent flows, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Persistent cyclonic structures in self-similar turbulent flows will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-228209