Back to Search
Start Over
Cascades and dissipation ratio in rotating MHD turbulence at low magnetic Prandtl number
- Source :
- Phys.Rev.E82:046311,2010
- Publication Year :
- 2010
-
Abstract
- A phenomenology of isotropic magnetohydrodynamic turbulence subject to both rotation and applied magnetic field is presented. It is assumed that the triple correlations decay-time is the shortest between the eddy turn-over time and the ones associated to the rotating frequency and Alfv\'en wave period. For $Pm=1$ it leads to four kinds of piecewise spectra, depending on the four parameters, injection rate of energy, magnetic diffusivity, rotation rate and applied field. With a shell model of MHD turbulence (including rotation and applied magnetic field), spectra for $Pm \le 1$ are presented, together with the ratio between magnetic and viscous dissipation.<br />Comment: 5 figures, 1 table, appear in PRE
Details
- Database :
- arXiv
- Journal :
- Phys.Rev.E82:046311,2010
- Publication Type :
- Report
- Accession number :
- edsarx.1009.3549
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevE.82.046311