Mathematics – Logic
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsh31a1649c&link_type=abstract
American Geophysical Union, Fall Meeting 2008, abstract #SH31A-1649
Mathematics
Logic
7839 Nonlinear Phenomena (4400, 6944), 7857 Stochastic Phenomena (3235, 3265, 4475), 7863 Turbulence (4490)
Scientific paper
The studies on space plasma turbulence mainly focused on the spectral and statistical features of magnetic and plasma parameter longitudinal fluctuations. This description is, however, incomplete being the longitudinal velocity and/or magnetic field difference only one of the locally independent components of the gradient tensors governing the global dynamics of the plasma. In the last decade significant advances have been found in the characterization and in the experimental techniques to measure and model all the components of the velocity gradient tensor in the framework of fluid turbulence [Chertkov et al., Phys. Fluids, 11, 2394, 1999]. Here, we attempt an evaluation of the small scale velocity gradient tensor (at the edge of the MHD domain) for a case study of space plasma turbulence. The statistics P(R, Q) of the velocity gradient (topological) invariants is similar to what is found in the case of the low end of the inertial range for hydrodynamic turbulence, suggesting the occurrence of vortex stretching (Vieillefosse tail) [Viellefosse, Physica 125A, 150, 1984].
Consolini Giuseppe
Materassi Massimo
No associations
LandOfFree
On Velocity Gradient Tensor in Space Plasma Turbulent Flows: A Case Study 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 On Velocity Gradient Tensor in Space Plasma Turbulent Flows: A Case Study, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On Velocity Gradient Tensor in Space Plasma Turbulent Flows: A Case Study will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1247561