Exact scaling laws and the local structure of isotropic magnetohydrodynamic turbulence
| dc.creator | Yousef, Tarek A. | |
| dc.creator | Rincon, Francois | |
| dc.creator | Schekochihin, Alexander A. | |
| dc.date | 2006-11-21 | |
| dc.date.accessioned | 2026-07-07T10:20:57Z | |
| dc.date.available | 2026-07-07T10:20:57Z | |
| dc.description | This paper examines the consistency of the exact scaling laws for isotropic MHD turbulence in numerical simulations with large magnetic Prandtl numbers Pm and with Pm=1. The exact laws are used to elucidate the structure of the magnetic and velocity fields. Despite the linear scaling of certain third-order correlation functions, the situation is not analogous to the case of Kolmogorov turbulence. The magnetic field is adequately described by a model of stripy (folded) field with direction reversals at the resistive scale. At currently available resolutions, the cascade of kinetic energy is short-circuited by the direct exchange of energy between the forcing-scale motions and the stripy magnetic fields. This nonlocal interaction is the defining feature of isotropic MHD turbulence. | |
| dc.description | 10 pages, 6 figures. Accepted for publication in Journal of Fluid Mechanics | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0611692 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0611692 | |
| dc.identifier | J.FluidMech.575:111-120,2005 | |
| dc.identifier | doi:10.1017/S0022112006004186 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/175019 | |
| dc.subject | Astrophysics | |
| dc.subject | Fluid Dynamics | |
| dc.title | Exact scaling laws and the local structure of isotropic magnetohydrodynamic turbulence | |
| dc.type | text |