Analysis of cancellation in two-dimensional magnetohydrodynamic turbulence
Chaotic Dynamics
2009-11-07 v1 Data Analysis, Statistics and Probability
Fluid Dynamics
Plasma Physics
Abstract
A signed measure analysis of two-dimensional intermittent magnetohydrodynamic turbulence is presented. This kind of analysis is performed to characterize the scaling behavior of the sign-oscillating flow structures, and their geometrical properties. In particular, it is observed that cancellations between positive and negative contributions of the field inside structures, are inhibited for scales smaller than the Taylor microscale, and stop near the dissipative scale. Moreover, from a simple geometrical argument, the relationship between the cancellation exponent and the typical fractal dimension of the structures in the flow is obtained.
Keywords
Cite
@article{arxiv.nlin/0111053,
title = {Analysis of cancellation in two-dimensional magnetohydrodynamic turbulence},
author = {L. Sorriso-Valvo and V. Carbone and A. Noullez and H. Politano and A. Pouquet and P. Veltri},
journal= {arXiv preprint arXiv:nlin/0111053},
year = {2009}
}
Comments
21 pages, 5 figures (3 .jpg not included in the latex file)